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Comparing deliantra/server/lib/cf.pm (file contents):
Revision 1.69 by root, Mon Sep 18 01:10:35 2006 UTC vs.
Revision 1.283 by root, Sun Jun 24 04:09:29 2007 UTC

1	package cf;	1	package cf;
		2
		3	use utf8;
		4	use strict;
2		5
3	use Symbol;	6	use Symbol;
4	use List::Util;	7	use List::Util;
		8	use Socket;
5	use Storable;	9	use Storable;
		10	use Event;
6	use Opcode;	11	use Opcode;
7	use Safe;	12	use Safe;
8	use Safe::Hole;	13	use Safe::Hole;
9		14
		15	use Coro 3.61 ();
		16	use Coro::State;
		17	use Coro::Handle;
		18	use Coro::Event;
		19	use Coro::Timer;
		20	use Coro::Signal;
		21	use Coro::Semaphore;
		22	use Coro::AIO;
		23	use Coro::Storable;
		24
		25	use BDB ();
		26	use Data::Dumper;
		27	use Digest::MD5;
		28	use Fcntl;
		29	use YAML::Syck ();
		30	use IO::AIO 2.32 ();
10	use Time::HiRes;	31	use Time::HiRes;
11	use Event;	32	use Compress::LZF;
		33
		34	# configure various modules to our taste
		35	#
		36	$Storable::canonical = 1; # reduce rsync transfers
		37	Coro::State::cctx_stacksize 256000; # 1-2MB stack, for deep recursions in maze generator
		38	Compress::LZF::sfreeze_cr { }; # prime Compress::LZF so it does not use require later
		39
12	$Event::Eval = 1; # no idea why this is required, but it is	40	$Event::Eval = 1; # no idea why this is required, but it is
13		41
14	use strict;	42	# work around bug in YAML::Syck - bad news for perl6, will it be as broken wrt. unicode?
		43	$YAML::Syck::ImplicitUnicode = 1;
15		44
16	_init_vars;	45	$Coro::main->prio (Coro::PRIO_MAX); # run main coroutine ("the server") with very high priority
17		46
		47	sub WF_AUTOCANCEL () { 1 } # automatically cancel this watcher on reload
		48
18	our %COMMAND = ();	49	our %COMMAND = ();
		50	our %COMMAND_TIME = ();
		51
		52	our @EXTS = (); # list of extension package names
		53	our %EXTCMD = ();
		54	our %EXT_CORO = (); # coroutines bound to extensions
		55	our %EXT_MAP = (); # pluggable maps
		56
		57	our $RELOAD; # number of reloads so far
19	our @EVENT;	58	our @EVENT;
20	our $LIBDIR = maps_directory "perl";
21		59
22	our $TICK = MAX_TIME * 1e-6;	60	our $CONFDIR = confdir;
		61	our $DATADIR = datadir;
		62	our $LIBDIR = "$DATADIR/ext";
		63	our $PODDIR = "$DATADIR/pod";
		64	our $MAPDIR = "$DATADIR/" . mapdir;
		65	our $LOCALDIR = localdir;
		66	our $TMPDIR = "$LOCALDIR/" . tmpdir;
		67	our $UNIQUEDIR = "$LOCALDIR/" . uniquedir;
		68	our $PLAYERDIR = "$LOCALDIR/" . playerdir;
		69	our $RANDOMDIR = "$LOCALDIR/random";
		70	our $BDBDIR = "$LOCALDIR/db";
		71
		72	our $TICK = MAX_TIME * 1e-6; # this is a CONSTANT(!)
23	our $TICK_WATCHER;	73	our $TICK_WATCHER;
		74	our $AIO_POLL_WATCHER;
		75	our $NEXT_RUNTIME_WRITE; # when should the runtime file be written
24	our $NEXT_TICK;	76	our $NEXT_TICK;
		77	our $NOW;
		78	our $USE_FSYNC = 1; # use fsync to write maps - default off
		79
		80	our $BDB_POLL_WATCHER;
		81	our $DB_ENV;
		82
		83	our %CFG;
		84
		85	our $UPTIME; $UPTIME ||= time;
		86	our $RUNTIME;
		87
		88	our %PLAYER; # all users
		89	our %MAP; # all maps
		90	our $LINK_MAP; # the special {link} map, which is always available
		91
		92	# used to convert map paths into valid unix filenames by replacing / by ∕
		93	our $PATH_SEP = "∕"; # U+2215, chosen purely for visual reasons
		94
		95	our $LOAD; # a number between 0 (idle) and 1 (too many objects)
		96	our $LOADAVG; # same thing, but with alpha-smoothing
		97	our $tick_start; # for load detecting purposes
		98
		99	binmode STDOUT;
		100	binmode STDERR;
		101
		102	# read virtual server time, if available
		103	unless ($RUNTIME || !-e "$LOCALDIR/runtime") {
		104	open my $fh, "<", "$LOCALDIR/runtime"
		105	or die "unable to read runtime file: $!";
		106	$RUNTIME = <$fh> + 0.;
		107	}
		108
		109	mkdir $_
		110	for $LOCALDIR, $TMPDIR, $UNIQUEDIR, $PLAYERDIR, $RANDOMDIR, $BDBDIR;
		111
		112	our $EMERGENCY_POSITION;
		113
		114	sub cf::map::normalise;
		115
		116	#############################################################################
		117
		118	=head2 GLOBAL VARIABLES
		119
		120	=over 4
		121
		122	=item $cf::UPTIME
		123
		124	The timestamp of the server start (so not actually an uptime).
		125
		126	=item $cf::RUNTIME
		127
		128	The time this server has run, starts at 0 and is increased by $cf::TICK on
		129	every server tick.
		130
		131	=item $cf::CONFDIR $cf::DATADIR $cf::LIBDIR $cf::PODDIR
		132	$cf::MAPDIR $cf::LOCALDIR $cf::TMPDIR $cf::UNIQUEDIR
		133	$cf::PLAYERDIR $cf::RANDOMDIR $cf::BDBDIR
		134
		135	Various directories - "/etc", read-only install directory, perl-library
		136	directory, pod-directory, read-only maps directory, "/var", "/var/tmp",
		137	unique-items directory, player file directory, random maps directory and
		138	database environment.
		139
		140	=item $cf::NOW
		141
		142	The time of the last (current) server tick.
		143
		144	=item $cf::TICK
		145
		146	The interval between server ticks, in seconds.
		147
		148	=item $cf::LOADAVG
		149
		150	The current CPU load on the server (alpha-smoothed), as a value between 0
		151	(none) and 1 (overloaded), indicating how much time is spent on processing
		152	objects per tick. Healthy values are < 0.5.
		153
		154	=item $cf::LOAD
		155
		156	The raw value load value from the last tick.
		157
		158	=item %cf::CFG
		159
		160	Configuration for the server, loaded from C</etc/crossfire/config>, or
		161	from wherever your confdir points to.
		162
		163	=item cf::wait_for_tick, cf::wait_for_tick_begin
		164
		165	These are functions that inhibit the current coroutine one tick. cf::wait_for_tick_begin only
		166	returns directly I<after> the tick processing (and consequently, can only wake one process
		167	per tick), while cf::wait_for_tick wakes up all waiters after tick processing.
		168
		169	=back
		170
		171	=cut
25		172
26	BEGIN {	173	BEGIN {
27	*CORE::GLOBAL::warn = sub {	174	*CORE::GLOBAL::warn = sub {
28	my $msg = join "", @_;	175	my $msg = join "", @_;
		176
29	$msg .= "\n"	177	$msg .= "\n"
30	unless $msg =~ /\n$/;	178	unless $msg =~ /\n$/;
31		179
32	print STDERR "cfperl: $msg";	180	$msg =~ s/([\x00-\x08\x0b-\x1f])/sprintf "\\x%02x", ord $1/ge;
		181
		182	utf8::encode $msg;
33	LOG llevError, "cfperl: $msg";	183	LOG llevError, $msg;
34	};	184	};
35	}	185	}
36		186
		187	@safe::cf::global::ISA = @cf::global::ISA = 'cf::attachable';
		188	@safe::cf::object::ISA = @cf::object::ISA = 'cf::attachable';
		189	@safe::cf::player::ISA = @cf::player::ISA = 'cf::attachable';
		190	@safe::cf::client::ISA = @cf::client::ISA = 'cf::attachable';
		191	@safe::cf::map::ISA = @cf::map::ISA = 'cf::attachable';
		192	@safe::cf::arch::ISA = @cf::arch::ISA = 'cf::object';
37	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';	193	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object'; # not really true (yet)
38		194
39	# we bless all objects into (empty) derived classes to force a method lookup	195	# we bless all objects into (empty) derived classes to force a method lookup
40	# within the Safe compartment.	196	# within the Safe compartment.
41	for my $pkg (qw(cf::object cf::object::player cf::player cf::map cf::party cf::region cf::arch cf::living)) {	197	for my $pkg (qw(
		198	cf::global cf::attachable
		199	cf::object cf::object::player
		200	cf::client cf::player
		201	cf::arch cf::living
		202	cf::map cf::party cf::region
		203	)) {
42	no strict 'refs';	204	no strict 'refs';
43	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;	205	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;
44	}	206	}
45		207
46	$Event::DIED = sub {	208	$Event::DIED = sub {
47	warn "error in event callback: @_";	209	warn "error in event callback: @_";
48	};	210	};
49		211
50	my %ext_pkg;
51	my @exts;
52	my @hook;
53	my %command;
54	my %extcmd;
55
56	#############################################################################	212	#############################################################################
57	# utility functions
58		213
		214	=head2 UTILITY FUNCTIONS
		215
		216	=over 4
		217
		218	=item dumpval $ref
		219
		220	=cut
		221
		222	sub dumpval {
		223	eval {
		224	local $SIG{__DIE__};
		225	my $d;
		226	if (1) {
		227	$d = new Data::Dumper([$_[0]], ["*var"]);
		228	$d->Terse(1);
		229	$d->Indent(2);
		230	$d->Quotekeys(0);
		231	$d->Useqq(1);
		232	#$d->Bless(...);
		233	$d->Seen($_[1]) if @_ > 1;
		234	$d = $d->Dump();
		235	}
		236	$d =~ s/([\x00-\x07\x09\x0b\x0c\x0e-\x1f])/sprintf "\\x%02x", ord($1)/ge;
		237	$d
		238	} || "[unable to dump $_[0]: '$@']";
		239	}
		240
59	use JSON::Syck (); # TODO# replace by JSON::PC once working	241	use JSON::XS qw(to_json from_json); # TODO# replace by JSON::PC once working
60		242
61	sub from_json($) {	243	=item $ref = cf::from_json $json
62	$JSON::Syck::ImplicitUnicode = 1; # work around JSON::Syck bugs
63	JSON::Syck::Load $_[0]
64	}
65		244
66	sub to_json($) {	245	Converts a JSON string into the corresponding perl data structure.
67	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs	246
68	JSON::Syck::Dump $_[0]	247	=item $json = cf::to_json $ref
		248
		249	Converts a perl data structure into its JSON representation.
		250
		251	=item cf::lock_wait $string
		252
		253	Wait until the given lock is available. See cf::lock_acquire.
		254
		255	=item my $lock = cf::lock_acquire $string
		256
		257	Wait until the given lock is available and then acquires it and returns
		258	a Coro::guard object. If the guard object gets destroyed (goes out of scope,
		259	for example when the coroutine gets canceled), the lock is automatically
		260	returned.
		261
		262	Lock names should begin with a unique identifier (for example, cf::map::find
		263	uses map_find and cf::map::load uses map_load).
		264
		265	=item $locked = cf::lock_active $string
		266
		267	Return true if the lock is currently active, i.e. somebody has locked it.
		268
		269	=cut
		270
		271	our %LOCK;
		272
		273	sub lock_wait($) {
		274	my ($key) = @_;
		275
		276	# wait for lock, if any
		277	while ($LOCK{$key}) {
		278	push @{ $LOCK{$key} }, $Coro::current;
		279	Coro::schedule;
		280	}
69	}	281	}
		282
		283	sub lock_acquire($) {
		284	my ($key) = @_;
		285
		286	# wait, to be sure we are not locked
		287	lock_wait $key;
		288
		289	$LOCK{$key} = [];
		290
		291	Coro::guard {
		292	# wake up all waiters, to be on the safe side
		293	$_->ready for @{ delete $LOCK{$key} };
		294	}
		295	}
		296
		297	sub lock_active($) {
		298	my ($key) = @_;
		299
		300	! ! $LOCK{$key}
		301	}
		302
		303	sub freeze_mainloop {
		304	return unless $TICK_WATCHER->is_active;
		305
		306	my $guard = Coro::guard {
		307	$TICK_WATCHER->start;
		308	};
		309	$TICK_WATCHER->stop;
		310	$guard
		311	}
		312
		313	=item cf::async { BLOCK }
		314
		315	Currently the same as Coro::async_pool, meaning you cannot use
		316	C<on_destroy>, C<join> or other gimmicks on these coroutines. The only
		317	thing you are allowed to do is call C<prio> on it.
		318
		319	=cut
		320
		321	BEGIN { *async = \&Coro::async_pool }
		322
		323	=item cf::sync_job { BLOCK }
		324
		325	The design of Crossfire TRT requires that the main coroutine ($Coro::main)
		326	is always able to handle events or runnable, as Crossfire TRT is only
		327	partly reentrant. Thus "blocking" it by e.g. waiting for I/O is not
		328	acceptable.
		329
		330	If it must be done, put the blocking parts into C<sync_job>. This will run
		331	the given BLOCK in another coroutine while waiting for the result. The
		332	server will be frozen during this time, so the block should either finish
		333	fast or be very important.
		334
		335	=cut
		336
		337	sub sync_job(&) {
		338	my ($job) = @_;
		339
		340	if ($Coro::current == $Coro::main) {
		341	my $time = Event::time;
		342
		343	# this is the main coro, too bad, we have to block
		344	# till the operation succeeds, freezing the server :/
		345
		346	# TODO: use suspend/resume instead
		347	# (but this is cancel-safe)
		348	my $freeze_guard = freeze_mainloop;
		349
		350	my $busy = 1;
		351	my @res;
		352
		353	(async {
		354	@res = eval { $job->() };
		355	warn $@ if $@;
		356	undef $busy;
		357	})->prio (Coro::PRIO_MAX);
		358
		359	while ($busy) {
		360	Coro::cede or Event::one_event;
		361	}
		362
		363	$time = Event::time - $time;
		364
		365	LOG llevError | logBacktrace, Carp::longmess "long sync job"
		366	if $time > $TICK * 0.5 && $TICK_WATCHER->is_active;
		367
		368	$tick_start += $time; # do not account sync jobs to server load
		369
		370	wantarray ? @res : $res[0]
		371	} else {
		372	# we are in another coroutine, how wonderful, everything just works
		373
		374	$job->()
		375	}
		376	}
		377
		378	=item $coro = cf::async_ext { BLOCK }
		379
		380	Like async, but this coro is automatically being canceled when the
		381	extension calling this is being unloaded.
		382
		383	=cut
		384
		385	sub async_ext(&) {
		386	my $cb = shift;
		387
		388	my $coro = &Coro::async ($cb);
		389
		390	$coro->on_destroy (sub {
		391	delete $EXT_CORO{$coro+0};
		392	});
		393	$EXT_CORO{$coro+0} = $coro;
		394
		395	$coro
		396	}
		397
		398	=item fork_call { }, $args
		399
		400	Executes the given code block with the given arguments in a seperate
		401	process, returning the results. Everything must be serialisable with
		402	Coro::Storable. May, of course, block. Note that the executed sub may
		403	never block itself or use any form of Event handling.
		404
		405	=cut
		406
		407	sub fork_call(&@) {
		408	my ($cb, @args) = @_;
		409
		410	# socketpair my $fh1, my $fh2, Socket::AF_UNIX, Socket::SOCK_STREAM, Socket::PF_UNSPEC
		411	# or die "socketpair: $!";
		412	pipe my $fh1, my $fh2
		413	or die "pipe: $!";
		414
		415	if (my $pid = fork) {
		416	close $fh2;
		417
		418	my $res = (Coro::Handle::unblock $fh1)->readline (undef);
		419	$res = Coro::Storable::thaw $res;
		420
		421	waitpid $pid, 0; # should not block anymore, we expect the child to simply behave
		422
		423	die $$res unless "ARRAY" eq ref $res;
		424
		425	return wantarray ? @$res : $res->[-1];
		426	} else {
		427	reset_signals;
		428	local $SIG{__WARN__};
		429	local $SIG{__DIE__};
		430	eval {
		431	close $fh1;
		432
		433	my @res = eval { $cb->(@args) };
		434	syswrite $fh2, Coro::Storable::freeze +($@ ? \"$@" : \@res);
		435	};
		436
		437	warn $@ if $@;
		438	_exit 0;
		439	}
		440	}
		441
		442	=item $value = cf::db_get $family => $key
		443
		444	Returns a single value from the environment database.
		445
		446	=item cf::db_put $family => $key => $value
		447
		448	Stores the given C<$value> in the family. It can currently store binary
		449	data only (use Compress::LZF::sfreeze_cr/sthaw to convert to/from binary).
		450
		451	=cut
		452
		453	our $DB;
		454
		455	sub db_init {
		456	unless ($DB) {
		457	$DB = BDB::db_create $DB_ENV;
		458
		459	cf::sync_job {
		460	eval {
		461	$DB->set_flags (BDB::CHKSUM);
		462
		463	BDB::db_open $DB, undef, "db", undef, BDB::BTREE,
		464	BDB::CREATE | BDB::AUTO_COMMIT, 0666;
		465	cf::cleanup "db_open(db): $!" if $!;
		466	};
		467	cf::cleanup "db_open(db): $@" if $@;
		468	};
		469	}
		470	}
		471
		472	sub db_get($$) {
		473	my $key = "$_[0]/$_[1]";
		474
		475	cf::sync_job {
		476	BDB::db_get $DB, undef, $key, my $data;
		477
		478	$! ? ()
		479	: $data
		480	}
		481	}
		482
		483	sub db_put($$$) {
		484	BDB::dbreq_pri 4;
		485	BDB::db_put $DB, undef, "$_[0]/$_[1]", $_[2], 0, sub { };
		486	}
		487
		488	=item cf::cache $id => [$paths...], $processversion => $process
		489
		490	Generic caching function that returns the value of the resource $id,
		491	caching and regenerating as required.
		492
		493	This function can block.
		494
		495	=cut
		496
		497	sub cache {
		498	my ($id, $src, $processversion, $process) = @_;
		499
		500	my $meta =
		501	join "\x00",
		502	$processversion,
		503	map {
		504	aio_stat $_
		505	and Carp::croak "$_: $!";
		506
		507	($_, (stat _)[7,9])
		508	} @$src;
		509
		510	my $dbmeta = db_get cache => "$id/meta";
		511	if ($dbmeta ne $meta) {
		512	# changed, we may need to process
		513
		514	my @data;
		515	my $md5;
		516
		517	for (0 .. $#$src) {
		518	0 <= aio_load $src->[$_], $data[$_]
		519	or Carp::croak "$src->[$_]: $!";
		520	}
		521
		522	# if processing is expensive, check
		523	# checksum first
		524	if (1) {
		525	$md5 =
		526	join "\x00",
		527	$processversion,
		528	map {
		529	Coro::cede;
		530	($src->[$_], Digest::MD5::md5_hex $data[$_])
		531	} 0.. $#$src;
		532
		533
		534	my $dbmd5 = db_get cache => "$id/md5";
		535	if ($dbmd5 eq $md5) {
		536	db_put cache => "$id/meta", $meta;
		537
		538	return db_get cache => "$id/data";
		539	}
		540	}
		541
		542	my $t1 = Time::HiRes::time;
		543	my $data = $process->(\@data);
		544	my $t2 = Time::HiRes::time;
		545
		546	warn "cache: '$id' processed in ", $t2 - $t1, "s\n";
		547
		548	db_put cache => "$id/data", $data;
		549	db_put cache => "$id/md5" , $md5;
		550	db_put cache => "$id/meta", $meta;
		551
		552	return $data;
		553	}
		554
		555	db_get cache => "$id/data"
		556	}
		557
		558	=item cf::datalog type => key => value, ...
		559
		560	Log a datalog packet of the given type with the given key-value pairs.
		561
		562	=cut
		563
		564	sub datalog($@) {
		565	my ($type, %kv) = @_;
		566	warn "DATALOG ", JSON::XS->new->ascii->encode ({ %kv, type => $type });
		567	}
		568
		569	=back
		570
		571	=cut
70		572
71	#############################################################################	573	#############################################################################
72	# "new" plug-in system
73		574
74	=head3 EVENTS AND OBJECT ATTACHMENTS	575	=head2 ATTACHABLE OBJECTS
		576
		577	Many objects in crossfire are so-called attachable objects. That means you can
		578	attach callbacks/event handlers (a collection of which is called an "attachment")
		579	to it. All such attachable objects support the following methods.
		580
		581	In the following description, CLASS can be any of C<global>, C<object>
		582	C<player>, C<client> or C<map> (i.e. the attachable objects in
		583	Crossfire TRT).
75		584
76	=over 4	585	=over 4
77		586
78	=item $object->attach ($attachment, key => $value...)
79
80	=item $object->detach ($attachment)
81
82	Attach/detach a pre-registered attachment to an object.
83
84	=item $player->attach ($attachment, key => $value...)
85
86	=item $player->detach ($attachment)
87
88	Attach/detach a pre-registered attachment to a player.
89
90	=item $map->attach ($attachment, key => $value...)	587	=item $attachable->attach ($attachment, key => $value...)
91		588
92	=item $map->detach ($attachment)	589	=item $attachable->detach ($attachment)
93		590
94	Attach/detach a pre-registered attachment to a map.	591	Attach/detach a pre-registered attachment to a specific object and give it
		592	the specified key/value pairs as arguments.
95		593
96	=item $bool = $object->attached ($name)	594	Example, attach a minesweeper attachment to the given object, making it a
		595	10x10 minesweeper game:
97		596
98	=item $bool = $player->attached ($name)	597	$obj->attach (minesweeper => width => 10, height => 10);
99		598
100	=item $bool = $map->attached ($name)	599	=item $bool = $attachable->attached ($name)
101		600
102	Checks wether the named attachment is currently attached to the object.	601	Checks wether the named attachment is currently attached to the object.
103		602
104	=item cf::attach_global ...	603	=item cf::CLASS->attach ...
105		604
106	Attach handlers for global events.	605	=item cf::CLASS->detach ...
107		606
108	This and all following C<attach_*>-functions expect any number of the	607	Define an anonymous attachment and attach it to all objects of the given
109	following handler/hook descriptions:	608	CLASS. See the next function for an explanation of its arguments.
		609
		610	You can attach to global events by using the C<cf::global> class.
		611
		612	Example, log all player logins:
		613
		614	cf::player->attach (
		615	on_login => sub {
		616	my ($pl) = @_;
		617	...
		618	},
		619	);
		620
		621	Example, attach to the jeweler skill:
		622
		623	cf::object->attach (
		624	type => cf::SKILL,
		625	subtype => cf::SK_JEWELER,
		626	on_use_skill => sub {
		627	my ($sk, $ob, $part, $dir, $msg) = @_;
		628	...
		629	},
		630	);
		631
		632	=item cf::CLASS::attachment $name, ...
		633
		634	Register an attachment by C<$name> through which attachable objects of the
		635	given CLASS can refer to this attachment.
		636
		637	Some classes such as crossfire maps and objects can specify attachments
		638	that are attached at load/instantiate time, thus the need for a name.
		639
		640	These calls expect any number of the following handler/hook descriptions:
110		641
111	=over 4	642	=over 4
112		643
113	=item prio => $number	644	=item prio => $number
114		645
…		…
116	by another C<prio> setting). Lower priority handlers get executed	647	by another C<prio> setting). Lower priority handlers get executed
117	earlier. The default priority is C<0>, and many built-in handlers are	648	earlier. The default priority is C<0>, and many built-in handlers are
118	registered at priority C<-1000>, so lower priorities should not be used	649	registered at priority C<-1000>, so lower priorities should not be used
119	unless you know what you are doing.	650	unless you know what you are doing.
120		651
		652	=item type => $type
		653
		654	(Only for C<< cf::object->attach >> calls), limits the attachment to the
		655	given type of objects only (the additional parameter C<subtype> can be
		656	used to further limit to the given subtype).
		657
121	=item on_I<event> => \&cb	658	=item on_I<event> => \&cb
122		659
123	Call the given code reference whenever the named event happens (event is	660	Call the given code reference whenever the named event happens (event is
124	something like C<instantiate>, C<apply>, C<use_skill> and so on, and which	661	something like C<instantiate>, C<apply>, C<use_skill> and so on, and which
125	handlers are recognised generally depends on the type of object these	662	handlers are recognised generally depends on the type of object these
…		…
134	package and register them. Only handlers for eevents supported by the	671	package and register them. Only handlers for eevents supported by the
135	object/class are recognised.	672	object/class are recognised.
136		673
137	=back	674	=back
138		675
139	=item cf::attach_to_type $object_type, $subtype, ...	676	Example, define an attachment called "sockpuppet" that calls the given
		677	event handler when a monster attacks:
140		678
141	Attach handlers for a specific object type (e.g. TRANSPORT) and	679	cf::object::attachment sockpuppet =>
142	subtype. If C<$subtype> is zero or undef, matches all objects of the given	680	on_skill_attack => sub {
143	type.	681	my ($self, $victim) = @_;
144		682	...
145	=item cf::attach_to_objects ...
146
147	Attach handlers to all objects. Do not use this except for debugging or
148	very rare events, as handlers are (obviously) called for I<all> objects in
149	the game.
150
151	=item cf::attach_to_players ...
152
153	Attach handlers to all players.
154
155	=item cf::attach_to_maps ...
156
157	Attach handlers to all maps.
158
159	=item cf:register_attachment $name, ...
160
161	Register an attachment by name through which objects can refer to this
162	attachment.
163
164	=item cf:register_player_attachment $name, ...
165
166	Register an attachment by name through which players can refer to this
167	attachment.
168
169	=item cf:register_map_attachment $name, ...
170
171	Register an attachment by name through which maps can refer to this
172	attachment.
173
174	=cut
175
176	# the following variables are defined in .xs and must not be re-created
177	our @CB_GLOBAL = (); # registry for all global events
178	our @CB_OBJECT = (); # all objects (should not be used except in emergency)
179	our @CB_PLAYER = ();
180	our @CB_TYPE = (); # registry for type (cf-object class) based events
181	our @CB_MAP = ();
182
183	my %attachment;
184
185	sub _attach_cb($\%$$$) {
186	my ($registry, $undo, $event, $prio, $cb) = @_;
187
188	use sort 'stable';
189
190	$cb = [$prio, $cb];
191
192	@{$registry->[$event]} = sort
193	{ $a->[0] cmp $b->[0] }
194	@{$registry->[$event] || []}, $cb;
195
196	push @{$undo->{cb}}, [$event, $cb];
197	}
198
199	# attach handles attaching event callbacks
200	# the only thing the caller has to do is pass the correct
201	# registry (== where the callback attaches to).
202	sub _attach(\@$@) {
203	my ($registry, $klass, @arg) = @_;
204
205	my $prio = 0;
206
207	my %undo = (
208	registry => $registry,
209	cb => [],
210	);
211
212	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;
213
214	while (@arg) {
215	my $type = shift @arg;
216
217	if ($type eq "prio") {
218	$prio = shift @arg;
219
220	} elsif ($type eq "package") {
221	my $pkg = shift @arg;
222
223	while (my ($name, $id) = each %cb_id) {
224	if (my $cb = $pkg->can ($name)) {
225	_attach_cb $registry, %undo, $id, $prio, $cb;
226	}
227	}	683	}
228
229	} elsif (exists $cb_id{$type}) {
230	_attach_cb $registry, %undo, $cb_id{$type}, $prio, shift @arg;
231
232	} elsif (ref $type) {
233	warn "attaching objects not supported, ignoring.\n";
234
235	} else {
236	shift @arg;
237	warn "attach argument '$type' not supported, ignoring.\n";
238	}
239	}
240
241	\%undo
242	}
243
244	sub _attach_attachment {
245	my ($obj, $name, %arg) = @_;
246
247	return if exists $obj->{_attachment}{$name};
248
249	my $res;
250
251	if (my $attach = $attachment{$name}) {
252	my $registry = $obj->registry;
253
254	for (@$attach) {
255	my ($klass, @attach) = @$_;
256	$res = _attach @$registry, $klass, @attach;
257	}
258
259	$obj->{$name} = \%arg;
260	} else {
261	warn "object uses attachment '$name' that is not available, postponing.\n";
262	}
263
264	$obj->{_attachment}{$name} = undef;
265
266	$res->{attachment} = $name;
267	$res
268	}
269
270	*cf::object::attach =
271	*cf::player::attach =
272	*cf::map::attach = sub {
273	my ($obj, $name, %arg) = @_;
274
275	_attach_attachment $obj, $name, %arg;
276	};
277
278	# all those should be optimised
279	*cf::object::detach =
280	*cf::player::detach =
281	*cf::map::detach = sub {
282	my ($obj, $name) = @_;
283
284	delete $obj->{_attachment}{$name};
285	reattach ($obj);
286	};
287
288	*cf::object::attached =
289	*cf::player::attached =
290	*cf::map::attached = sub {
291	my ($obj, $name) = @_;
292
293	exists $obj->{_attachment}{$name}
294	};
295
296	sub attach_global {
297	_attach @CB_GLOBAL, KLASS_GLOBAL, @_
298	}
299
300	sub attach_to_type {
301	my $type = shift;
302	my $subtype = shift;
303
304	_attach @{$CB_TYPE[$type + $subtype * NUM_SUBTYPES]}, KLASS_OBJECT, @_
305	}
306
307	sub attach_to_objects {
308	_attach @CB_OBJECT, KLASS_OBJECT, @_
309	}
310
311	sub attach_to_players {
312	_attach @CB_PLAYER, KLASS_PLAYER, @_
313	}
314
315	sub attach_to_maps {
316	_attach @CB_MAP, KLASS_MAP, @_
317	}
318
319	sub register_attachment {
320	my $name = shift;
321
322	$attachment{$name} = [[KLASS_OBJECT, @_]];
323	}
324
325	sub register_player_attachment {
326	my $name = shift;
327
328	$attachment{$name} = [[KLASS_PLAYER, @_]];
329	}
330
331	sub register_map_attachment {
332	my $name = shift;
333
334	$attachment{$name} = [[KLASS_MAP, @_]];
335	}
336
337	our $override;
338	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?
339
340	sub override {
341	$override = 1;
342	@invoke_results = ();
343	}
344
345	sub do_invoke {
346	my $event = shift;
347	my $callbacks = shift;
348
349	@invoke_results = ();
350
351	local $override;
352
353	for (@$callbacks) {
354	eval { &{$_->[1]} };
355
356	if ($@) {
357	warn "$@";
358	warn "... while processing $EVENT[$event][0](@_) event, skipping processing altogether.\n";
359	override;
360	}
361
362	return 1 if $override;
363	}
364
365	0	684	}
366	}
367		685
368	=item $bool = cf::invoke EVENT_GLOBAL_XXX, ...	686	=item $attachable->valid
369
370	=item $bool = $object->invoke (EVENT_OBJECT_XXX, ...)
371
372	=item $bool = $player->invoke (EVENT_PLAYER_XXX, ...)
373
374	=item $bool = $map->invoke (EVENT_MAP_XXX, ...)
375
376	Generate a global/object/player/map-specific event with the given arguments.
377
378	This API is preliminary (most likely, the EVENT_KLASS_xxx prefix will be
379	removed in future versions), and there is no public API to access override
380	results (if you must, access C<@cf::invoke_results> directly).
381
382	=back
383
384	=head2 methods valid for all pointers
385
386	=over 4
387
388	=item $object->valid
389
390	=item $player->valid
391
392	=item $map->valid
393		687
394	Just because you have a perl object does not mean that the corresponding	688	Just because you have a perl object does not mean that the corresponding
395	C-level object still exists. If you try to access an object that has no	689	C-level object still exists. If you try to access an object that has no
396	valid C counterpart anymore you get an exception at runtime. This method	690	valid C counterpart anymore you get an exception at runtime. This method
397	can be used to test for existence of the C object part without causing an	691	can be used to test for existence of the C object part without causing an
398	exception.	692	exception.
399		693
		694	=cut
		695
		696	# the following variables are defined in .xs and must not be re-created
		697	our @CB_GLOBAL = (); # registry for all global events
		698	our @CB_ATTACHABLE = (); # registry for all attachables
		699	our @CB_OBJECT = (); # all objects (should not be used except in emergency)
		700	our @CB_PLAYER = ();
		701	our @CB_CLIENT = ();
		702	our @CB_TYPE = (); # registry for type (cf-object class) based events
		703	our @CB_MAP = ();
		704
		705	my %attachment;
		706
		707	sub cf::attachable::thawer_merge {
		708	# simply override everything except _meta
		709	local $_[0]{_meta};
		710	%{$_[0]} = %{$_[1]};
		711	}
		712
		713	sub _attach_cb($$$$) {
		714	my ($registry, $event, $prio, $cb) = @_;
		715
		716	use sort 'stable';
		717
		718	$cb = [$prio, $cb];
		719
		720	@{$registry->[$event]} = sort
		721	{ $a->[0] cmp $b->[0] }
		722	@{$registry->[$event] || []}, $cb;
		723	}
		724
		725	# hack
		726	my %attachable_klass = map +($_ => 1), KLASS_OBJECT, KLASS_CLIENT, KLASS_PLAYER, KLASS_MAP;
		727
		728	# attach handles attaching event callbacks
		729	# the only thing the caller has to do is pass the correct
		730	# registry (== where the callback attaches to).
		731	sub _attach {
		732	my ($registry, $klass, @arg) = @_;
		733
		734	my $object_type;
		735	my $prio = 0;
		736	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;
		737
		738	#TODO: get rid of this hack
		739	if ($attachable_klass{$klass}) {
		740	%cb_id = (%cb_id, map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == KLASS_ATTACHABLE, 0 .. $#EVENT);
		741	}
		742
		743	while (@arg) {
		744	my $type = shift @arg;
		745
		746	if ($type eq "prio") {
		747	$prio = shift @arg;
		748
		749	} elsif ($type eq "type") {
		750	$object_type = shift @arg;
		751	$registry = $CB_TYPE[$object_type] ||= [];
		752
		753	} elsif ($type eq "subtype") {
		754	defined $object_type or Carp::croak "subtype specified without type";
		755	my $object_subtype = shift @arg;
		756	$registry = $CB_TYPE[$object_type + $object_subtype * NUM_TYPES] ||= [];
		757
		758	} elsif ($type eq "package") {
		759	my $pkg = shift @arg;
		760
		761	while (my ($name, $id) = each %cb_id) {
		762	if (my $cb = $pkg->can ($name)) {
		763	_attach_cb $registry, $id, $prio, $cb;
		764	}
		765	}
		766
		767	} elsif (exists $cb_id{$type}) {
		768	_attach_cb $registry, $cb_id{$type}, $prio, shift @arg;
		769
		770	} elsif (ref $type) {
		771	warn "attaching objects not supported, ignoring.\n";
		772
		773	} else {
		774	shift @arg;
		775	warn "attach argument '$type' not supported, ignoring.\n";
		776	}
		777	}
		778	}
		779
		780	sub _object_attach {
		781	my ($obj, $name, %arg) = @_;
		782
		783	return if exists $obj->{_attachment}{$name};
		784
		785	if (my $attach = $attachment{$name}) {
		786	my $registry = $obj->registry;
		787
		788	for (@$attach) {
		789	my ($klass, @attach) = @$_;
		790	_attach $registry, $klass, @attach;
		791	}
		792
		793	$obj->{$name} = \%arg;
		794	} else {
		795	warn "object uses attachment '$name' which is not available, postponing.\n";
		796	}
		797
		798	$obj->{_attachment}{$name} = undef;
		799	}
		800
		801	sub cf::attachable::attach {
		802	if (ref $_[0]) {
		803	_object_attach @_;
		804	} else {
		805	_attach shift->_attach_registry, @_;
		806	}
		807	_recalc_want;
		808	};
		809
		810	# all those should be optimised
		811	sub cf::attachable::detach {
		812	my ($obj, $name) = @_;
		813
		814	if (ref $obj) {
		815	delete $obj->{_attachment}{$name};
		816	reattach ($obj);
		817	} else {
		818	Carp::croak "cannot, currently, detach class attachments";
		819	}
		820	_recalc_want;
		821	};
		822
		823	sub cf::attachable::attached {
		824	my ($obj, $name) = @_;
		825
		826	exists $obj->{_attachment}{$name}
		827	}
		828
		829	for my $klass (qw(ATTACHABLE GLOBAL OBJECT PLAYER CLIENT MAP)) {
		830	eval "#line " . __LINE__ . " 'cf.pm'
		831	sub cf::\L$klass\E::_attach_registry {
		832	(\\\@CB_$klass, KLASS_$klass)
		833	}
		834
		835	sub cf::\L$klass\E::attachment {
		836	my \$name = shift;
		837
		838	\$attachment{\$name} = [[KLASS_$klass, \@_]];
		839	}
		840	";
		841	die if $@;
		842	}
		843
		844	our $override;
		845	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?
		846
		847	sub override {
		848	$override = 1;
		849	@invoke_results = ();
		850	}
		851
		852	sub do_invoke {
		853	my $event = shift;
		854	my $callbacks = shift;
		855
		856	@invoke_results = ();
		857
		858	local $override;
		859
		860	for (@$callbacks) {
		861	eval { &{$_->[1]} };
		862
		863	if ($@) {
		864	warn "$@";
		865	warn "... while processing $EVENT[$event][0](@_) event, skipping processing altogether.\n";
		866	override;
		867	}
		868
		869	return 1 if $override;
		870	}
		871
		872	0
		873	}
		874
		875	=item $bool = cf::global::invoke (EVENT_CLASS_XXX, ...)
		876
		877	=item $bool = $attachable->invoke (EVENT_CLASS_XXX, ...)
		878
		879	Generate an object-specific event with the given arguments.
		880
		881	This API is preliminary (most likely, the EVENT_CLASS_xxx prefix will be
		882	removed in future versions), and there is no public API to access override
		883	results (if you must, access C<@cf::invoke_results> directly).
		884
400	=back	885	=back
401		886
402	=cut	887	=cut
403
404	*cf::object::valid =
405	*cf::player::valid =
406	*cf::map::valid = \&cf::_valid;
407		888
408	#############################################################################	889	#############################################################################
409	# object support	890	# object support
410		891
411	sub instantiate {
412	my ($obj, $data) = @_;
413
414	$data = from_json $data;
415
416	for (@$data) {
417	my ($name, $args) = @$_;
418
419	$obj->attach ($name, %{$args || {} });
420	}
421	}
422
423	# basically do the same as instantiate, without calling instantiate
424	sub reattach {	892	sub reattach {
		893	# basically do the same as instantiate, without calling instantiate
425	my ($obj) = @_;	894	my ($obj) = @_;
		895
		896	bless $obj, ref $obj; # re-bless in case extensions have been reloaded
		897
426	my $registry = $obj->registry;	898	my $registry = $obj->registry;
427		899
428	@$registry = ();	900	@$registry = ();
429		901
430	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };	902	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };
431		903
432	for my $name (keys %{ $obj->{_attachment} || {} }) {	904	for my $name (keys %{ $obj->{_attachment} || {} }) {
433	if (my $attach = $attachment{$name}) {	905	if (my $attach = $attachment{$name}) {
434	for (@$attach) {	906	for (@$attach) {
435	my ($klass, @attach) = @$_;	907	my ($klass, @attach) = @$_;
436	_attach @$registry, $klass, @attach;	908	_attach $registry, $klass, @attach;
437	}	909	}
438	} else {	910	} else {
439	warn "object uses attachment '$name' that is not available, postponing.\n";	911	warn "object uses attachment '$name' that is not available, postponing.\n";
440	}	912	}
441	}	913	}
442	}	914	}
443		915
444	sub object_freezer_save {	916	cf::attachable->attach (
445	my ($filename, $rdata, $objs) = @_;
446
447	if (length $$rdata) {
448	warn sprintf "saving %s (%d,%d)\n",
449	$filename, length $$rdata, scalar @$objs;
450
451	if (open my $fh, ">:raw", "$filename~") {
452	chmod SAVE_MODE, $fh;
453	syswrite $fh, $$rdata;
454	close $fh;
455
456	if (@$objs && open my $fh, ">:raw", "$filename.pst~") {
457	chmod SAVE_MODE, $fh;
458	syswrite $fh, Storable::nfreeze { version => 1, objs => $objs };
459	close $fh;
460	rename "$filename.pst~", "$filename.pst";
461	} else {
462	unlink "$filename.pst";
463	}
464
465	rename "$filename~", $filename;
466	} else {
467	warn "FATAL: $filename~: $!\n";
468	}
469	} else {
470	unlink $filename;
471	unlink "$filename.pst";
472	}
473	}
474
475	sub object_thawer_load {
476	my ($filename) = @_;
477
478	local $/;
479
480	my $av;
481
482	#TODO: use sysread etc.
483	if (open my $data, "<:raw:perlio", $filename) {
484	$data = <$data>;
485	if (open my $pst, "<:raw:perlio", "$filename.pst") {
486	$av = eval { (Storable::thaw <$pst>)->{objs} };
487	}
488	return ($data, $av);
489	}
490
491	()
492	}
493
494	attach_to_objects
495	prio => -1000000,	917	prio => -1000000,
		918	on_instantiate => sub {
		919	my ($obj, $data) = @_;
		920
		921	$data = from_json $data;
		922
		923	for (@$data) {
		924	my ($name, $args) = @$_;
		925
		926	$obj->attach ($name, %{$args || {} });
		927	}
		928	},
		929	on_reattach => \&reattach,
496	on_clone => sub {	930	on_clone => sub {
497	my ($src, $dst) = @_;	931	my ($src, $dst) = @_;
498		932
499	@{$dst->registry} = @{$src->registry};	933	@{$dst->registry} = @{$src->registry};
500		934
501	%$dst = %$src;	935	%$dst = %$src;
502		936
503	%{$dst->{_attachment}} = %{$src->{_attachment}}	937	%{$dst->{_attachment}} = %{$src->{_attachment}}
504	if exists $src->{_attachment};	938	if exists $src->{_attachment};
505	},	939	},
506	;	940	);
		941
		942	sub object_freezer_save {
		943	my ($filename, $rdata, $objs) = @_;
		944
		945	sync_job {
		946	if (length $$rdata) {
		947	warn sprintf "saving %s (%d,%d)\n",
		948	$filename, length $$rdata, scalar @$objs;
		949
		950	if (my $fh = aio_open "$filename~", O_WRONLY | O_CREAT, 0600) {
		951	chmod SAVE_MODE, $fh;
		952	aio_write $fh, 0, (length $$rdata), $$rdata, 0;
		953	aio_fsync $fh if $cf::USE_FSYNC;
		954	close $fh;
		955
		956	if (@$objs) {
		957	if (my $fh = aio_open "$filename.pst~", O_WRONLY | O_CREAT, 0600) {
		958	chmod SAVE_MODE, $fh;
		959	my $data = Storable::nfreeze { version => 1, objs => $objs };
		960	aio_write $fh, 0, (length $data), $data, 0;
		961	aio_fsync $fh if $cf::USE_FSYNC;
		962	close $fh;
		963	aio_rename "$filename.pst~", "$filename.pst";
		964	}
		965	} else {
		966	aio_unlink "$filename.pst";
		967	}
		968
		969	aio_rename "$filename~", $filename;
		970	} else {
		971	warn "FATAL: $filename~: $!\n";
		972	}
		973	} else {
		974	aio_unlink $filename;
		975	aio_unlink "$filename.pst";
		976	}
		977	}
		978	}
		979
		980	sub object_freezer_as_string {
		981	my ($rdata, $objs) = @_;
		982
		983	use Data::Dumper;
		984
		985	$$rdata . Dumper $objs
		986	}
		987
		988	sub object_thawer_load {
		989	my ($filename) = @_;
		990
		991	my ($data, $av);
		992
		993	(aio_load $filename, $data) >= 0
		994	or return;
		995
		996	unless (aio_stat "$filename.pst") {
		997	(aio_load "$filename.pst", $av) >= 0
		998	or return;
		999	$av = eval { (Storable::thaw $av)->{objs} };
		1000	}
		1001
		1002	warn sprintf "loading %s (%d)\n",
		1003	$filename, length $data, scalar @{$av || []};
		1004	return ($data, $av);
		1005	}
		1006
		1007	=head2 COMMAND CALLBACKS
		1008
		1009	=over 4
		1010
		1011	=cut
507		1012
508	#############################################################################	1013	#############################################################################
509	# old plug-in events	1014	# command handling &c
510		1015
511	sub inject_event {	1016	=item cf::register_command $name => \&callback($ob,$args);
512	my $extension = shift;
513	my $event_code = shift;
514		1017
515	my $cb = $hook[$event_code]{$extension}	1018	Register a callback for execution when the client sends the user command
516	or return;	1019	$name.
517		1020
518	&$cb	1021	=cut
519	}
520
521	sub inject_global_event {
522	my $event = shift;
523
524	my $cb = $hook[$event]
525	or return;
526
527	List::Util::max map &$_, values %$cb
528	}
529
530	sub inject_command {
531	my ($name, $obj, $params) = @_;
532
533	for my $cmd (@{ $command{$name} }) {
534	$cmd->[1]->($obj, $params);
535	}
536
537	-1
538	}
539		1022
540	sub register_command {	1023	sub register_command {
541	my ($name, $time, $cb) = @_;	1024	my ($name, $cb) = @_;
542		1025
543	my $caller = caller;	1026	my $caller = caller;
544	#warn "registering command '$name/$time' to '$caller'";	1027	#warn "registering command '$name/$time' to '$caller'";
545		1028
546	push @{ $command{$name} }, [$time, $cb, $caller];	1029	push @{ $COMMAND{$name} }, [$caller, $cb];
547	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @{ $command{$name} };
548	}	1030	}
		1031
		1032	=item cf::register_extcmd $name => \&callback($pl,$packet);
		1033
		1034	Register a callback fro execution when the client sends an extcmd packet.
		1035
		1036	If the callback returns something, it is sent back as if reply was being
		1037	called.
		1038
		1039	=cut
549		1040
550	sub register_extcmd {	1041	sub register_extcmd {
551	my ($name, $cb) = @_;	1042	my ($name, $cb) = @_;
552		1043
553	my $caller = caller;	1044	$EXTCMD{$name} = $cb;
554	#warn "registering extcmd '$name' to '$caller'";
555
556	$extcmd{$name} = [$cb, $caller];
557	}	1045	}
558		1046
559	sub register {	1047	cf::player->attach (
560	my ($base, $pkg) = @_;	1048	on_command => sub {
		1049	my ($pl, $name, $params) = @_;
561		1050
562	#TODO	1051	my $cb = $COMMAND{$name}
563	}	1052	or return;
564		1053
565	sub load_extension {	1054	for my $cmd (@$cb) {
566	my ($path) = @_;	1055	$cmd->[1]->($pl->ob, $params);
567
568	$path =~ /([^\/\\]+)\.ext$/ or die "$path";
569	my $base = $1;
570	my $pkg = $1;
571	$pkg =~ s/[^[:word:]]/_/g;
572	$pkg = "ext::$pkg";
573
574	warn "loading '$path' into '$pkg'\n";
575
576	open my $fh, "<:utf8", $path
577	or die "$path: $!";
578
579	my $source =
580	"package $pkg; use strict; use utf8;\n"
581	. "#line 1 \"$path\"\n{\n"
582	. (do { local $/; <$fh> })
583	. "\n};\n1";
584
585	eval $source
586	or die "$path: $@";
587
588	push @exts, $pkg;
589	$ext_pkg{$base} = $pkg;
590
591	# no strict 'refs';
592	# @{"$pkg\::ISA"} = ext::;
593
594	register $base, $pkg;
595	}
596
597	sub unload_extension {
598	my ($pkg) = @_;
599
600	warn "removing extension $pkg\n";
601
602	# remove hooks
603	#TODO
604	# for my $idx (0 .. $#PLUGIN_EVENT) {
605	# delete $hook[$idx]{$pkg};
606	# }
607
608	# remove commands
609	for my $name (keys %command) {
610	my @cb = grep $_->[2] ne $pkg, @{ $command{$name} };
611
612	if (@cb) {
613	$command{$name} = \@cb;
614	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @cb;
615	} else {
616	delete $command{$name};
617	delete $COMMAND{"$name\000"};
618	}	1056	}
		1057
		1058	cf::override;
619	}	1059	},
620
621	# remove extcmds
622	for my $name (grep $extcmd{$_}[1] eq $pkg, keys %extcmd) {
623	delete $extcmd{$name};
624	}
625
626	if (my $cb = $pkg->can ("unload")) {
627	eval {
628	$cb->($pkg);
629	1
630	} or warn "$pkg unloaded, but with errors: $@";
631	}
632
633	Symbol::delete_package $pkg;
634	}
635
636	sub load_extensions {
637	my $LIBDIR = maps_directory "perl";
638
639	for my $ext (<$LIBDIR/*.ext>) {
640	next unless -r $ext;
641	eval {
642	load_extension $ext;
643	1
644	} or warn "$ext not loaded: $@";
645	}
646	}
647
648	#############################################################################
649	# extcmd framework, basically convert ext <msg>
650	# into pkg::->on_extcmd_arg1 (...) while shortcutting a few
651
652	attach_to_players
653	on_extcmd => sub {	1060	on_extcmd => sub {
654	my ($pl, $buf) = @_;	1061	my ($pl, $buf) = @_;
655		1062
656	my $msg = eval { from_json $buf };	1063	my $msg = eval { from_json $buf };
657		1064
658	if (ref $msg) {	1065	if (ref $msg) {
659	if (my $cb = $extcmd{$msg->{msgtype}}) {	1066	if (my $cb = $EXTCMD{$msg->{msgtype}}) {
660	if (my %reply = $cb->[0]->($pl, $msg)) {	1067	if (my %reply = $cb->($pl, $msg)) {
661	$pl->ext_reply ($msg->{msgid}, %reply);	1068	$pl->ext_reply ($msg->{msgid}, %reply);
662	}	1069	}
663	}	1070	}
664	} else {	1071	} else {
665	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";	1072	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
666	}	1073	}
667		1074
668	cf::override;	1075	cf::override;
669	},	1076	},
670	;	1077	);
		1078
		1079	sub load_extensions {
		1080	cf::sync_job {
		1081	my %todo;
		1082
		1083	for my $path (<$LIBDIR/*.ext>) {
		1084	next unless -r $path;
		1085
		1086	$path =~ /([^\/\\]+)\.ext$/ or die "$path";
		1087	my $base = $1;
		1088	my $pkg = $1;
		1089	$pkg =~ s/[^[:word:]]/_/g;
		1090	$pkg = "ext::$pkg";
		1091
		1092	open my $fh, "<:utf8", $path
		1093	or die "$path: $!";
		1094
		1095	my $source = do { local $/; <$fh> };
		1096
		1097	my %ext = (
		1098	path => $path,
		1099	base => $base,
		1100	pkg => $pkg,
		1101	);
		1102
		1103	$ext{meta} = { map { (split /=/, $_, 2)[0, 1] } split /\s+/, $1 }
		1104	if $source =~ /\A#!.*?perl.*?#\s*(.*)$/m;
		1105
		1106	$ext{source} =
		1107	"package $pkg; use strict; use utf8;\n"
		1108	. "#line 1 \"$path\"\n{\n"
		1109	. $source
		1110	. "\n};\n1";
		1111
		1112	$todo{$base} = \%ext;
		1113	}
		1114
		1115	my %done;
		1116	while (%todo) {
		1117	my $progress;
		1118
		1119	while (my ($k, $v) = each %todo) {
		1120	for (split /,\s*/, $v->{meta}{depends}) {
		1121	goto skip
		1122	unless exists $done{$_};
		1123	}
		1124
		1125	warn "... loading '$k' into '$v->{pkg}'\n";
		1126
		1127	unless (eval $v->{source}) {
		1128	my $msg = $@ ? "$v->{path}: $@\n"
		1129	: "$v->{base}: extension inactive.\n";
		1130
		1131	if (exists $v->{meta}{mandatory}) {
		1132	warn $msg;
		1133	warn "mandatory extension failed to load, exiting.\n";
		1134	exit 1;
		1135	}
		1136
		1137	warn $msg;
		1138	}
		1139
		1140	$done{$k} = delete $todo{$k};
		1141	push @EXTS, $v->{pkg};
		1142	$progress = 1;
		1143	}
		1144
		1145	skip:
		1146	die "cannot load " . (join ", ", keys %todo) . ": unable to resolve dependencies\n"
		1147	unless $progress;
		1148	}
		1149	};
		1150	}
671		1151
672	#############################################################################	1152	#############################################################################
673	# load/save/clean perl data associated with a map
674		1153
675	*cf::mapsupport::on_clean = sub {	1154	=back
		1155
		1156	=head2 CORE EXTENSIONS
		1157
		1158	Functions and methods that extend core crossfire objects.
		1159
		1160	=cut
		1161
		1162	package cf::player;
		1163
		1164	use Coro::AIO;
		1165
		1166	=head3 cf::player
		1167
		1168	=over 4
		1169
		1170	=item cf::player::find $login
		1171
		1172	Returns the given player object, loading it if necessary (might block).
		1173
		1174	=cut
		1175
		1176	sub playerdir($) {
		1177	"$PLAYERDIR/"
		1178	. (ref $_[0] ? $_[0]->ob->name : $_[0])
		1179	}
		1180
		1181	sub path($) {
		1182	my $login = ref $_[0] ? $_[0]->ob->name : $_[0];
		1183
		1184	(playerdir $login) . "/playerdata"
		1185	}
		1186
		1187	sub find_active($) {
		1188	$cf::PLAYER{$_[0]}
		1189	and $cf::PLAYER{$_[0]}->active
		1190	and $cf::PLAYER{$_[0]}
		1191	}
		1192
		1193	sub exists($) {
		1194	my ($login) = @_;
		1195
		1196	$cf::PLAYER{$login}
		1197	or cf::sync_job { !aio_stat path $login }
		1198	}
		1199
		1200	sub find($) {
		1201	return $cf::PLAYER{$_[0]} || do {
		1202	my $login = $_[0];
		1203
		1204	my $guard = cf::lock_acquire "user_find:$login";
		1205
		1206	$cf::PLAYER{$_[0]} || do {
		1207	# rename old playerfiles to new ones
		1208	#TODO: remove when no longer required
		1209	aio_link +(playerdir $login) . "/$login.pl.pst", (playerdir $login) . "/playerdata.pst";
		1210	aio_link +(playerdir $login) . "/$login.pl" , (playerdir $login) . "/playerdata";
		1211	aio_unlink +(playerdir $login) . "/$login.pl.pst";
		1212	aio_unlink +(playerdir $login) . "/$login.pl";
		1213
		1214	my $pl = load_pl path $login
		1215	or return;
		1216	$cf::PLAYER{$login} = $pl
		1217	}
		1218	}
		1219	}
		1220
		1221	sub save($) {
		1222	my ($pl) = @_;
		1223
		1224	return if $pl->{deny_save};
		1225
		1226	my $path = path $pl;
		1227	my $guard = cf::lock_acquire "user_save:$path";
		1228
		1229	return if $pl->{deny_save};
		1230
		1231	aio_mkdir playerdir $pl, 0770;
		1232	$pl->{last_save} = $cf::RUNTIME;
		1233
		1234	$pl->save_pl ($path);
		1235	Coro::cede;
		1236	}
		1237
		1238	sub new($) {
		1239	my ($login) = @_;
		1240
		1241	my $self = create;
		1242
		1243	$self->ob->name ($login);
		1244	$self->{deny_save} = 1;
		1245
		1246	$cf::PLAYER{$login} = $self;
		1247
		1248	$self
		1249	}
		1250
		1251	=item $pl->quit_character
		1252
		1253	Nukes the player without looking back. If logged in, the connection will
		1254	be destroyed. May block for a long time.
		1255
		1256	=cut
		1257
		1258	sub quit_character {
		1259	my ($pl) = @_;
		1260
		1261	my $name = $pl->ob->name;
		1262
		1263	$pl->{deny_save} = 1;
		1264	$pl->password ("*"); # this should lock out the player until we nuked the dir
		1265
		1266	$pl->invoke (cf::EVENT_PLAYER_LOGOUT, 1) if $pl->active;
		1267	$pl->deactivate;
		1268	$pl->invoke (cf::EVENT_PLAYER_QUIT);
		1269	$pl->ns->destroy if $pl->ns;
		1270
		1271	my $path = playerdir $pl;
		1272	my $temp = "$path~$cf::RUNTIME~deleting~";
		1273	aio_rename $path, $temp;
		1274	delete $cf::PLAYER{$pl->ob->name};
		1275	$pl->destroy;
		1276
		1277	my $prefix = qr<^~\Q$name\E/>;
		1278
		1279	# nuke player maps
		1280	$cf::MAP{$_}->nuke for grep /$prefix/, keys %cf::MAP;
		1281
		1282	IO::AIO::aio_rmtree $temp;
		1283	}
		1284
		1285	=item $pl->kick
		1286
		1287	Kicks a player out of the game. This destroys the connection.
		1288
		1289	=cut
		1290
		1291	sub kick {
		1292	my ($pl, $kicker) = @_;
		1293
		1294	$pl->invoke (cf::EVENT_PLAYER_KICK, $kicker);
		1295	$pl->killer ("kicked");
		1296	$pl->ns->destroy;
		1297	}
		1298
		1299	=item cf::player::list_logins
		1300
		1301	Returns am arrayref of all valid playernames in the system, can take a
		1302	while and may block, so not sync_job-capable, ever.
		1303
		1304	=cut
		1305
		1306	sub list_logins {
		1307	my $dirs = aio_readdir $PLAYERDIR
		1308	or return [];
		1309
		1310	my @logins;
		1311
		1312	for my $login (@$dirs) {
		1313	my $fh = aio_open path $login, Fcntl::O_RDONLY, 0 or next;
		1314	aio_read $fh, 0, 512, my $buf, 0 or next;
		1315	$buf !~ /^password -------------$/m or next; # official not-valid tag
		1316
		1317	utf8::decode $login;
		1318	push @logins, $login;
		1319	}
		1320
		1321	\@logins
		1322	}
		1323
		1324	=item $player->maps
		1325
		1326	Returns an arrayref of map paths that are private for this
		1327	player. May block.
		1328
		1329	=cut
		1330
		1331	sub maps($) {
		1332	my ($pl) = @_;
		1333
		1334	$pl = ref $pl ? $pl->ob->name : $pl;
		1335
		1336	my $files = aio_readdir playerdir $pl
		1337	or return;
		1338
		1339	my @paths;
		1340
		1341	for (@$files) {
		1342	utf8::decode $_;
		1343	next if /\.(?:pl|pst)$/;
		1344	next unless /^$PATH_SEP/o;
		1345
		1346	push @paths, cf::map::normalise "~$pl/$_";
		1347	}
		1348
		1349	\@paths
		1350	}
		1351
		1352	=item $protocol_xml = $player->expand_cfpod ($crossfire_pod)
		1353
		1354	Expand crossfire pod fragments into protocol xml.
		1355
		1356	=cut
		1357
		1358	sub expand_cfpod {
		1359	((my $self), (local $_)) = @_;
		1360
		1361	# escape & and <
		1362	s/&/&amp;/g;
		1363	s/(?<![BIUGH])</&lt;/g;
		1364
		1365	# this is buggy, it needs to properly take care of nested <'s
		1366
		1367	1 while
		1368	# replace B<>, I<>, U<> etc.
		1369	s/B<([^\>]*)>/<b>$1<\/b>/
		1370	|| s/I<([^\>]*)>/<i>$1<\/i>/
		1371	|| s/U<([^\>]*)>/<u>$1<\/u>/
		1372	# replace G<male|female> tags
		1373	|| s{G<([^>|]*)\|([^>]*)>}{
		1374	$self->gender ? $2 : $1
		1375	}ge
		1376	# replace H<hint text>
		1377	|| s/H<([^\>]*)>/<fg name="lightblue">[$1]<\/fg>/g;
		1378
		1379	# create single paragraphs (very hackish)
		1380	s/(?<=\S)\n(?=\w)/ /g;
		1381
		1382	$_
		1383	}
		1384
		1385	=item $player->ext_reply ($msgid, %msg)
		1386
		1387	Sends an ext reply to the player.
		1388
		1389	=cut
		1390
		1391	sub ext_reply($$%) {
		1392	my ($self, $id, %msg) = @_;
		1393
		1394	$msg{msgid} = $id;
		1395
		1396	$self->send ("ext " . cf::to_json \%msg);
		1397	}
		1398
		1399	=item $player->ext_event ($type, %msg)
		1400
		1401	Sends an ext event to the client.
		1402
		1403	=cut
		1404
		1405	sub ext_event($$%) {
		1406	my ($self, $type, %msg) = @_;
		1407
		1408	$self->ns->ext_event ($type, %msg);
		1409	}
		1410
		1411	=head3 cf::region
		1412
		1413	=over 4
		1414
		1415	=cut
		1416
		1417	package cf::region;
		1418
		1419	=item cf::region::find_by_path $path
		1420
		1421	Tries to decuce the likely region for a map knowing only its path.
		1422
		1423	=cut
		1424
		1425	sub find_by_path($) {
		1426	my ($path) = @_;
		1427
		1428	my ($match, $specificity);
		1429
		1430	for my $region (list) {
		1431	if ($region->match && $path =~ $region->match) {
		1432	($match, $specificity) = ($region, $region->specificity)
		1433	if $region->specificity > $specificity;
		1434	}
		1435	}
		1436
		1437	$match
		1438	}
		1439
		1440	=back
		1441
		1442	=head3 cf::map
		1443
		1444	=over 4
		1445
		1446	=cut
		1447
		1448	package cf::map;
		1449
		1450	use Fcntl;
		1451	use Coro::AIO;
		1452
		1453	use overload
		1454	'""' => \&as_string,
		1455	fallback => 1;
		1456
		1457	our $MAX_RESET = 3600;
		1458	our $DEFAULT_RESET = 3000;
		1459
		1460	sub generate_random_map {
		1461	my ($self, $rmp) = @_;
		1462	# mit "rum" bekleckern, nicht
		1463	$self->_create_random_map (
		1464	$rmp->{wallstyle}, $rmp->{wall_name}, $rmp->{floorstyle}, $rmp->{monsterstyle},
		1465	$rmp->{treasurestyle}, $rmp->{layoutstyle}, $rmp->{doorstyle}, $rmp->{decorstyle},
		1466	$rmp->{origin_map}, $rmp->{final_map}, $rmp->{exitstyle}, $rmp->{this_map},
		1467	$rmp->{exit_on_final_map},
		1468	$rmp->{xsize}, $rmp->{ysize},
		1469	$rmp->{expand2x}, $rmp->{layoutoptions1}, $rmp->{layoutoptions2}, $rmp->{layoutoptions3},
		1470	$rmp->{symmetry}, $rmp->{difficulty}, $rmp->{difficulty_given}, $rmp->{difficulty_increase},
		1471	$rmp->{dungeon_level}, $rmp->{dungeon_depth}, $rmp->{decoroptions}, $rmp->{orientation},
		1472	$rmp->{origin_y}, $rmp->{origin_x}, $rmp->{random_seed}, $rmp->{total_map_hp},
		1473	$rmp->{map_layout_style}, $rmp->{treasureoptions}, $rmp->{symmetry_used},
		1474	(cf::region::find $rmp->{region}), $rmp->{custom}
		1475	)
		1476	}
		1477
		1478	=item cf::map->register ($regex, $prio)
		1479
		1480	Register a handler for the map path matching the given regex at the
		1481	givne priority (higher is better, built-in handlers have priority 0, the
		1482	default).
		1483
		1484	=cut
		1485
		1486	sub register {
		1487	my (undef, $regex, $prio) = @_;
		1488	my $pkg = caller;
		1489
		1490	no strict;
		1491	push @{"$pkg\::ISA"}, __PACKAGE__;
		1492
		1493	$EXT_MAP{$pkg} = [$prio, qr<$regex>];
		1494	}
		1495
		1496	# also paths starting with '/'
		1497	$EXT_MAP{"cf::map"} = [0, qr{^(?=/)}];
		1498
		1499	sub thawer_merge {
		1500	my ($self, $merge) = @_;
		1501
		1502	# we have to keep some variables in memory intact
		1503	local $self->{path};
		1504	local $self->{load_path};
		1505
		1506	$self->SUPER::thawer_merge ($merge);
		1507	}
		1508
		1509	sub normalise {
		1510	my ($path, $base) = @_;
		1511
		1512	$path = "$path"; # make sure its a string
		1513
		1514	$path =~ s/\.map$//;
		1515
		1516	# map plan:
		1517	#
		1518	# /! non-realised random map exit (special hack!)
		1519	# {... are special paths that are not being touched
		1520	# ?xxx/... are special absolute paths
		1521	# ?random/... random maps
		1522	# /... normal maps
		1523	# ~user/... per-player map of a specific user
		1524
		1525	$path =~ s/$PATH_SEP/\//go;
		1526
		1527	# treat it as relative path if it starts with
		1528	# something that looks reasonable
		1529	if ($path =~ m{^(?:\./|\.\./|\w)}) {
		1530	$base or Carp::carp "normalise called with relative path and no base: '$path'";
		1531
		1532	$base =~ s{[^/]+/?$}{};
		1533	$path = "$base/$path";
		1534	}
		1535
		1536	for ($path) {
		1537	redo if s{//}{/};
		1538	redo if s{/\.?/}{/};
		1539	redo if s{/[^/]+/\.\./}{/};
		1540	}
		1541
		1542	$path
		1543	}
		1544
		1545	sub new_from_path {
		1546	my (undef, $path, $base) = @_;
		1547
		1548	return $path if UNIVERSAL::isa $path, "cf::map"; # already a map object
		1549
		1550	$path = normalise $path, $base;
		1551
		1552	for my $pkg (sort { $EXT_MAP{$b}[0] <=> $EXT_MAP{$a}[0] } keys %EXT_MAP) {
		1553	if ($path =~ $EXT_MAP{$pkg}[1]) {
		1554	my $self = bless cf::map::new, $pkg;
		1555	$self->{path} = $path; $self->path ($path);
		1556	$self->init; # pass $1 etc.
		1557	return $self;
		1558	}
		1559	}
		1560
		1561	Carp::carp "unable to resolve path '$path' (base '$base').";
		1562	()
		1563	}
		1564
		1565	sub init {
		1566	my ($self) = @_;
		1567
		1568	$self
		1569	}
		1570
		1571	sub as_string {
		1572	my ($self) = @_;
		1573
		1574	"$self->{path}"
		1575	}
		1576
		1577	# the displayed name, this is a one way mapping
		1578	sub visible_name {
		1579	&as_string
		1580	}
		1581
		1582	# the original (read-only) location
		1583	sub load_path {
		1584	my ($self) = @_;
		1585
		1586	"$MAPDIR/$self->{path}.map"
		1587	}
		1588
		1589	# the temporary/swap location
		1590	sub save_path {
		1591	my ($self) = @_;
		1592
		1593	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/g;
		1594	"$TMPDIR/$path.map"
		1595	}
		1596
		1597	# the unique path, undef == no special unique path
		1598	sub uniq_path {
		1599	my ($self) = @_;
		1600
		1601	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/g;
		1602	"$UNIQUEDIR/$path"
		1603	}
		1604
		1605	# and all this just because we cannot iterate over
		1606	# all maps in C++...
		1607	sub change_all_map_light {
		1608	my ($change) = @_;
		1609
		1610	$_->change_map_light ($change)
		1611	for grep $_->outdoor, values %cf::MAP;
		1612	}
		1613
		1614	sub decay_objects {
		1615	my ($self) = @_;
		1616
		1617	return if $self->{deny_reset};
		1618
		1619	$self->do_decay_objects;
		1620	}
		1621
		1622	sub unlink_save {
		1623	my ($self) = @_;
		1624
		1625	utf8::encode (my $save = $self->save_path);
		1626	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink $save;
		1627	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink "$save.pst";
		1628	}
		1629
		1630	sub load_header_from($) {
		1631	my ($self, $path) = @_;
		1632
		1633	utf8::encode $path;
		1634	#aio_open $path, O_RDONLY, 0
		1635	# or return;
		1636
		1637	$self->_load_header ($path)
		1638	or return;
		1639
		1640	$self->{load_path} = $path;
		1641
		1642	1
		1643	}
		1644
		1645	sub load_header_orig {
		1646	my ($self) = @_;
		1647
		1648	$self->load_header_from ($self->load_path)
		1649	}
		1650
		1651	sub load_header_temp {
		1652	my ($self) = @_;
		1653
		1654	$self->load_header_from ($self->save_path)
		1655	}
		1656
		1657	sub prepare_temp {
		1658	my ($self) = @_;
		1659
		1660	$self->last_access ((delete $self->{last_access})
		1661	|| $cf::RUNTIME); #d#
		1662	# safety
		1663	$self->{instantiate_time} = $cf::RUNTIME
		1664	if $self->{instantiate_time} > $cf::RUNTIME;
		1665	}
		1666
		1667	sub prepare_orig {
		1668	my ($self) = @_;
		1669
		1670	$self->{load_original} = 1;
		1671	$self->{instantiate_time} = $cf::RUNTIME;
		1672	$self->last_access ($cf::RUNTIME);
		1673	$self->instantiate;
		1674	}
		1675
		1676	sub load_header {
		1677	my ($self) = @_;
		1678
		1679	if ($self->load_header_temp) {
		1680	$self->prepare_temp;
		1681	} else {
		1682	$self->load_header_orig
		1683	or return;
		1684	$self->prepare_orig;
		1685	}
		1686
		1687	$self->{deny_reset} = 1
		1688	if $self->no_reset;
		1689
		1690	$self->default_region (cf::region::find_by_path $self->{path})
		1691	unless $self->default_region;
		1692
		1693	1
		1694	}
		1695
		1696	sub find;
		1697	sub find {
		1698	my ($path, $origin) = @_;
		1699
		1700	$path = normalise $path, $origin && $origin->path;
		1701
		1702	cf::lock_wait "map_find:$path";
		1703
		1704	$cf::MAP{$path} || do {
		1705	my $guard = cf::lock_acquire "map_find:$path";
		1706	my $map = new_from_path cf::map $path
		1707	or return;
		1708
		1709	$map->{last_save} = $cf::RUNTIME;
		1710
		1711	$map->load_header
		1712	or return;
		1713
		1714	if ($map->should_reset) {#d#TODO# disabled, crashy (locking issue?)
		1715	# doing this can freeze the server in a sync job, obviously
		1716	#$cf::WAIT_FOR_TICK->wait;
		1717	$map->reset;
		1718	undef $guard;
		1719	return find $path;
		1720	}
		1721
		1722	$cf::MAP{$path} = $map
		1723	}
		1724	}
		1725
		1726	sub pre_load { }
		1727	sub post_load { }
		1728
		1729	sub load {
		1730	my ($self) = @_;
		1731
		1732	local $self->{deny_reset} = 1; # loading can take a long time
		1733
		1734	my $path = $self->{path};
		1735
		1736	{
		1737	my $guard = cf::lock_acquire "map_load:$path";
		1738
		1739	return if $self->in_memory != cf::MAP_SWAPPED;
		1740
		1741	$self->in_memory (cf::MAP_LOADING);
		1742
		1743	$self->alloc;
		1744
		1745	$self->pre_load;
		1746	Coro::cede;
		1747
		1748	$self->_load_objects ($self->{load_path}, 1)
		1749	or return;
		1750
		1751	$self->set_object_flag (cf::FLAG_OBJ_ORIGINAL, 1)
		1752	if delete $self->{load_original};
		1753
		1754	if (my $uniq = $self->uniq_path) {
		1755	utf8::encode $uniq;
		1756	if (aio_open $uniq, O_RDONLY, 0) {
		1757	$self->clear_unique_items;
		1758	$self->_load_objects ($uniq, 0);
		1759	}
		1760	}
		1761
		1762	Coro::cede;
		1763	# now do the right thing for maps
		1764	$self->link_multipart_objects;
		1765	$self->difficulty ($self->estimate_difficulty)
		1766	unless $self->difficulty;
		1767	Coro::cede;
		1768
		1769	unless ($self->{deny_activate}) {
		1770	$self->decay_objects;
		1771	$self->fix_auto_apply;
		1772	$self->update_buttons;
		1773	Coro::cede;
		1774	$self->set_darkness_map;
		1775	Coro::cede;
		1776	$self->activate;
		1777	}
		1778
		1779	$self->in_memory (cf::MAP_IN_MEMORY);
		1780	}
		1781
		1782	$self->post_load;
		1783	}
		1784
		1785	sub customise_for {
		1786	my ($self, $ob) = @_;
		1787
		1788	return find "~" . $ob->name . "/" . $self->{path}
		1789	if $self->per_player;
		1790
		1791	# return find "?party/" . $ob->name . "/" . $self->{path}
		1792	# if $self->per_party;
		1793
		1794	$self
		1795	}
		1796
		1797	# find and load all maps in the 3x3 area around a map
		1798	sub load_diag {
676	my ($map) = @_;	1799	my ($map) = @_;
677		1800
678	my $path = $map->tmpname;	1801	my @diag; # diagonal neighbours
679	defined $path or return;
680		1802
681	unlink "$path.pst";	1803	for (0 .. 3) {
682	};	1804	my $neigh = $map->tile_path ($_)
		1805	or next;
		1806	$neigh = find $neigh, $map
		1807	or next;
		1808	$neigh->load;
683		1809
684	attach_to_maps prio => -10000, package => cf::mapsupport::;	1810	push @diag, [$neigh->tile_path (($_ + 3) % 4), $neigh],
		1811	[$neigh->tile_path (($_ + 1) % 4), $neigh];
		1812	}
685		1813
686	#############################################################################	1814	for (@diag) {
687	# load/save perl data associated with player->ob objects	1815	my $neigh = find @$_
688		1816	or next;
689	sub all_objects(@) {	1817	$neigh->load;
690	@_, map all_objects ($_->inv), @_	1818	}
691	}	1819	}
692		1820
693	# TODO: compatibility cruft, remove when no longer needed	1821	sub find_sync {
694	attach_to_players	1822	my ($path, $origin) = @_;
695	on_load => sub {
696	my ($pl, $path) = @_;
697		1823
698	for my $o (all_objects $pl->ob) {	1824	cf::sync_job { find $path, $origin }
699	if (my $value = $o->get_ob_key_value ("_perl_data")) {	1825	}
700	$o->set_ob_key_value ("_perl_data");
701		1826
702	%$o = %{ Storable::thaw pack "H*", $value };	1827	sub do_load_sync {
		1828	my ($map) = @_;
		1829
		1830	cf::sync_job { $map->load };
		1831	}
		1832
		1833	our %MAP_PREFETCH;
		1834	our $MAP_PREFETCHER = undef;
		1835
		1836	sub find_async {
		1837	my ($path, $origin) = @_;
		1838
		1839	$path = normalise $path, $origin && $origin->{path};
		1840
		1841	if (my $map = $cf::MAP{$path}) {
		1842	return $map if $map->in_memory == cf::MAP_IN_MEMORY;
		1843	}
		1844
		1845	undef $MAP_PREFETCH{$path};
		1846	$MAP_PREFETCHER ||= cf::async {
		1847	while (%MAP_PREFETCH) {
		1848	for my $path (keys %MAP_PREFETCH) {
		1849	my $map = find $path
		1850	or next;
		1851	$map->load;
		1852
		1853	delete $MAP_PREFETCH{$path};
703	}	1854	}
704	}	1855	}
		1856	undef $MAP_PREFETCHER;
		1857	};
		1858	$MAP_PREFETCHER->prio (6);
		1859
		1860	()
		1861	}
		1862
		1863	sub save {
		1864	my ($self) = @_;
		1865
		1866	my $lock = cf::lock_acquire "map_data:" . $self->path;
		1867
		1868	$self->{last_save} = $cf::RUNTIME;
		1869
		1870	return unless $self->dirty;
		1871
		1872	my $save = $self->save_path; utf8::encode $save;
		1873	my $uniq = $self->uniq_path; utf8::encode $uniq;
		1874
		1875	$self->{load_path} = $save;
		1876
		1877	return if $self->{deny_save};
		1878
		1879	local $self->{last_access} = $self->last_access;#d#
		1880
		1881	cf::async {
		1882	$_->contr->save for $self->players;
		1883	};
		1884
		1885	if ($uniq) {
		1886	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS);
		1887	$self->_save_objects ($uniq, cf::IO_UNIQUES);
		1888	} else {
		1889	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS | cf::IO_UNIQUES);
705	},	1890	}
706	;
707
708	#############################################################################
709	# core extensions - in perl
710
711	=item cf::player::exists $login
712
713	Returns true when the given account exists.
714
715	=cut
716
717	sub cf::player::exists($) {
718	cf::player::find $_[0]
719	or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;
720	}	1891	}
721		1892
		1893	sub swap_out {
		1894	my ($self) = @_;
		1895
		1896	# save first because save cedes
		1897	$self->save;
		1898
		1899	my $lock = cf::lock_acquire "map_data:" . $self->path;
		1900
		1901	return if $self->players;
		1902	return if $self->in_memory != cf::MAP_IN_MEMORY;
		1903	return if $self->{deny_save};
		1904
		1905	$self->clear;
		1906	$self->in_memory (cf::MAP_SWAPPED);
		1907	}
		1908
		1909	sub reset_at {
		1910	my ($self) = @_;
		1911
		1912	# TODO: safety, remove and allow resettable per-player maps
		1913	return 1e99 if $self->{deny_reset};
		1914
		1915	my $time = $self->fixed_resettime ? $self->{instantiate_time} : $self->last_access;
		1916	my $to = List::Util::min $MAX_RESET, $self->reset_timeout || $DEFAULT_RESET;
		1917
		1918	$time + $to
		1919	}
		1920
		1921	sub should_reset {
		1922	my ($self) = @_;
		1923
		1924	$self->reset_at <= $cf::RUNTIME
		1925	}
		1926
		1927	sub reset {
		1928	my ($self) = @_;
		1929
		1930	my $lock = cf::lock_acquire "map_data:$self->{path}";
		1931
		1932	return if $self->players;
		1933
		1934	warn "resetting map ", $self->path;
		1935
		1936	$self->in_memory (cf::MAP_SWAPPED);
		1937
		1938	# need to save uniques path
		1939	unless ($self->{deny_save}) {
		1940	my $uniq = $self->uniq_path; utf8::encode $uniq;
		1941
		1942	$self->_save_objects ($uniq, cf::IO_UNIQUES)
		1943	if $uniq;
		1944	}
		1945
		1946	delete $cf::MAP{$self->path};
		1947
		1948	$self->clear;
		1949
		1950	$_->clear_links_to ($self) for values %cf::MAP;
		1951
		1952	$self->unlink_save;
		1953	$self->destroy;
		1954	}
		1955
		1956	my $nuke_counter = "aaaa";
		1957
		1958	sub nuke {
		1959	my ($self) = @_;
		1960
		1961	delete $cf::MAP{$self->path};
		1962
		1963	$self->unlink_save;
		1964
		1965	bless $self, "cf::map";
		1966	delete $self->{deny_reset};
		1967	$self->{deny_save} = 1;
		1968	$self->reset_timeout (1);
		1969	$self->path ($self->{path} = "{nuke}/" . ($nuke_counter++));
		1970
		1971	$cf::MAP{$self->path} = $self;
		1972
		1973	$self->reset; # polite request, might not happen
		1974	}
		1975
		1976	=item $maps = cf::map::tmp_maps
		1977
		1978	Returns an arrayref with all map paths of currently instantiated and saved
		1979	maps. May block.
		1980
		1981	=cut
		1982
		1983	sub tmp_maps() {
		1984	[
		1985	map {
		1986	utf8::decode $_;
		1987	/\.map$/
		1988	? normalise $_
		1989	: ()
		1990	} @{ aio_readdir $TMPDIR or [] }
		1991	]
		1992	}
		1993
		1994	=item $maps = cf::map::random_maps
		1995
		1996	Returns an arrayref with all map paths of currently instantiated and saved
		1997	random maps. May block.
		1998
		1999	=cut
		2000
		2001	sub random_maps() {
		2002	[
		2003	map {
		2004	utf8::decode $_;
		2005	/\.map$/
		2006	? normalise "?random/$_"
		2007	: ()
		2008	} @{ aio_readdir $RANDOMDIR or [] }
		2009	]
		2010	}
		2011
		2012	=item cf::map::unique_maps
		2013
		2014	Returns an arrayref of paths of all shared maps that have
		2015	instantiated unique items. May block.
		2016
		2017	=cut
		2018
		2019	sub unique_maps() {
		2020	[
		2021	map {
		2022	utf8::decode $_;
		2023	/\.map$/
		2024	? normalise $_
		2025	: ()
		2026	} @{ aio_readdir $UNIQUEDIR or [] }
		2027	]
		2028	}
		2029
		2030	package cf;
		2031
		2032	=back
		2033
		2034	=head3 cf::object
		2035
		2036	=cut
		2037
		2038	package cf::object;
		2039
		2040	=over 4
		2041
		2042	=item $ob->inv_recursive
		2043
		2044	Returns the inventory of the object _and_ their inventories, recursively.
		2045
		2046	=cut
		2047
		2048	sub inv_recursive_;
		2049	sub inv_recursive_ {
		2050	map { $_, inv_recursive_ $_->inv } @_
		2051	}
		2052
		2053	sub inv_recursive {
		2054	inv_recursive_ inv $_[0]
		2055	}
		2056
		2057	package cf;
		2058
		2059	=back
		2060
		2061	=head3 cf::object::player
		2062
		2063	=over 4
		2064
722	=item $player->reply ($npc, $msg[, $flags])	2065	=item $player_object->reply ($npc, $msg[, $flags])
723		2066
724	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>	2067	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>
725	can be C<undef>. Does the right thing when the player is currently in a	2068	can be C<undef>. Does the right thing when the player is currently in a
726	dialogue with the given NPC character.	2069	dialogue with the given NPC character.
727		2070
728	=cut	2071	=cut
729		2072
730	# rough implementation of a future "reply" method that works	2073	# rough implementation of a future "reply" method that works
731	# with dialog boxes.	2074	# with dialog boxes.
		2075	#TODO: the first argument must go, split into a $npc->reply_to ( method
732	sub cf::object::player::reply($$$;$) {	2076	sub cf::object::player::reply($$$;$) {
733	my ($self, $npc, $msg, $flags) = @_;	2077	my ($self, $npc, $msg, $flags) = @_;
734		2078
735	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;	2079	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;
736		2080
737	if ($self->{record_replies}) {	2081	if ($self->{record_replies}) {
738	push @{ $self->{record_replies} }, [$npc, $msg, $flags];	2082	push @{ $self->{record_replies} }, [$npc, $msg, $flags];
		2083
739	} else {	2084	} else {
		2085	my $pl = $self->contr;
		2086
		2087	if ($pl->{npc_dialog} && $pl->{npc_dialog}->{id}) {
		2088	my $diag = $pl->{npc_dialog};
		2089	$diag->{pl}->ext_reply (
		2090	$diag->{id},
		2091	msgtype => "reply",
		2092	msg => $diag->{pl}->expand_cfpod ($msg),
		2093	add_topics => []
		2094	);
		2095
		2096	} else {
740	$msg = $npc->name . " says: $msg" if $npc;	2097	$msg = $npc->name . " says: $msg" if $npc;
741	$self->message ($msg, $flags);	2098	$self->message ($msg, $flags);
		2099	}
		2100	}
		2101	}
		2102
		2103	=item $player_object->may ("access")
		2104
		2105	Returns wether the given player is authorized to access resource "access"
		2106	(e.g. "command_wizcast").
		2107
		2108	=cut
		2109
		2110	sub cf::object::player::may {
		2111	my ($self, $access) = @_;
		2112
		2113	$self->flag (cf::FLAG_WIZ) ||
		2114	(ref $cf::CFG{"may_$access"}
		2115	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}
		2116	: $cf::CFG{"may_$access"})
		2117	}
		2118
		2119	=item $player_object->enter_link
		2120
		2121	Freezes the player and moves him/her to a special map (C<{link}>).
		2122
		2123	The player should be reasonably safe there for short amounts of time. You
		2124	I<MUST> call C<leave_link> as soon as possible, though.
		2125
		2126	Will never block.
		2127
		2128	=item $player_object->leave_link ($map, $x, $y)
		2129
		2130	Moves the player out of the special C<{link}> map onto the specified
		2131	map. If the map is not valid (or omitted), the player will be moved back
		2132	to the location he/she was before the call to C<enter_link>, or, if that
		2133	fails, to the emergency map position.
		2134
		2135	Might block.
		2136
		2137	=cut
		2138
		2139	sub link_map {
		2140	unless ($LINK_MAP) {
		2141	$LINK_MAP = cf::map::find "{link}"
		2142	or cf::cleanup "FATAL: unable to provide {link} map, exiting.";
		2143	$LINK_MAP->load;
		2144	}
		2145
		2146	$LINK_MAP
		2147	}
		2148
		2149	sub cf::object::player::enter_link {
		2150	my ($self) = @_;
		2151
		2152	$self->deactivate_recursive;
		2153
		2154	return if UNIVERSAL::isa $self->map, "ext::map_link";
		2155
		2156	$self->{_link_pos} ||= [$self->map->{path}, $self->x, $self->y]
		2157	if $self->map && $self->map->{path} ne "{link}";
		2158
		2159	$self->enter_map ($LINK_MAP || link_map, 10, 10);
		2160	}
		2161
		2162	sub cf::object::player::leave_link {
		2163	my ($self, $map, $x, $y) = @_;
		2164
		2165	return unless $self->contr->active;
		2166
		2167	my $link_pos = delete $self->{_link_pos};
		2168
		2169	unless ($map) {
		2170	# restore original map position
		2171	($map, $x, $y) = @{ $link_pos || [] };
		2172	$map = cf::map::find $map;
		2173
		2174	unless ($map) {
		2175	($map, $x, $y) = @$EMERGENCY_POSITION;
		2176	$map = cf::map::find $map
		2177	or die "FATAL: cannot load emergency map\n";
		2178	}
		2179	}
		2180
		2181	($x, $y) = (-1, -1)
		2182	unless (defined $x) && (defined $y);
		2183
		2184	# use -1 or undef as default coordinates, not 0, 0
		2185	($x, $y) = ($map->enter_x, $map->enter_y)
		2186	if $x <=0 && $y <= 0;
		2187
		2188	$map->load;
		2189	$map->load_diag;
		2190
		2191	return unless $self->contr->active;
		2192	$self->activate_recursive;
		2193
		2194	local $self->{_prev_pos} = $link_pos; # ugly hack for rent.ext
		2195	$self->enter_map ($map, $x, $y);
		2196	}
		2197
		2198	=item $player_object->goto ($path, $x, $y[, $check->($map)])
		2199
		2200	Moves the player to the given map-path and coordinates by first freezing
		2201	her, loading and preparing them map, calling the provided $check callback
		2202	that has to return the map if sucecssful, and then unfreezes the player on
		2203	the new (success) or old (failed) map position.
		2204
		2205	=cut
		2206
		2207	our $GOTOGEN;
		2208
		2209	sub cf::object::player::goto {
		2210	my ($self, $path, $x, $y, $check) = @_;
		2211
		2212	# do generation counting so two concurrent goto's will be executed in-order
		2213	my $gen = $self->{_goto_generation} = ++$GOTOGEN;
		2214
		2215	$self->enter_link;
		2216
		2217	(async {
		2218	my $map = eval {
		2219	my $map = cf::map::find $path;
		2220
		2221	if ($map) {
		2222	$map = $map->customise_for ($self);
		2223	$map = $check->($map) if $check && $map;
		2224	} else {
		2225	$self->message ("The exit to '$path' is closed", cf::NDI_UNIQUE | cf::NDI_RED);
		2226	}
		2227
		2228	$map
		2229	};
		2230
		2231	if ($@) {
		2232	$self->message ("Something went wrong within the server, please report this incident!", cf::NDI_UNIQUE | cf::NDI_RED);
		2233	LOG llevError | logBacktrace, Carp::longmess $@;
		2234	}
		2235
		2236	if ($gen == $self->{_goto_generation}) {
		2237	delete $self->{_goto_generation};
		2238	$self->leave_link ($map, $x, $y);
		2239	}
		2240	})->prio (1);
		2241	}
		2242
		2243	=item $player_object->enter_exit ($exit_object)
		2244
		2245	=cut
		2246
		2247	sub parse_random_map_params {
		2248	my ($spec) = @_;
		2249
		2250	my $rmp = { # defaults
		2251	xsize => (cf::rndm 15, 40),
		2252	ysize => (cf::rndm 15, 40),
		2253	symmetry => (cf::rndm 1, cf::SYMMETRY_XY),
		2254	#layout => string,
742	}	2255	};
743	}
744		2256
745	=item $player->ext_reply ($msgid, $msgtype, %msg)	2257	for (split /\n/, $spec) {
		2258	my ($k, $v) = split /\s+/, $_, 2;
746		2259
747	Sends an ext reply to the player.	2260	$rmp->{lc $k} = $v if (length $k) && (length $v);
		2261	}
748		2262
749	=cut	2263	$rmp
		2264	}
750		2265
751	sub cf::player::ext_reply($$$%) {	2266	sub prepare_random_map {
		2267	my ($exit) = @_;
		2268
		2269	my $guard = cf::lock_acquire "exit_prepare:$exit";
		2270
		2271	# all this does is basically replace the /! path by
		2272	# a new random map path (?random/...) with a seed
		2273	# that depends on the exit object
		2274
		2275	my $rmp = parse_random_map_params $exit->msg;
		2276
		2277	if ($exit->map) {
		2278	$rmp->{region} = $exit->region->name;
		2279	$rmp->{origin_map} = $exit->map->path;
		2280	$rmp->{origin_x} = $exit->x;
		2281	$rmp->{origin_y} = $exit->y;
		2282	}
		2283
		2284	$rmp->{random_seed} ||= $exit->random_seed;
		2285
		2286	my $data = cf::to_json $rmp;
		2287	my $md5 = Digest::MD5::md5_hex $data;
		2288	my $meta = "$RANDOMDIR/$md5.meta";
		2289
		2290	if (my $fh = aio_open "$meta~", O_WRONLY | O_CREAT, 0666) {
		2291	aio_write $fh, 0, (length $data), $data, 0;
		2292	undef $fh;
		2293	aio_rename "$meta~", $meta;
		2294
		2295	$exit->slaying ("?random/$md5");
		2296	$exit->msg (undef);
		2297	}
		2298	}
		2299
		2300	sub cf::object::player::enter_exit {
		2301	my ($self, $exit) = @_;
		2302
		2303	return unless $self->type == cf::PLAYER;
		2304
		2305	if ($exit->slaying eq "/!") {
		2306	#TODO: this should de-fi-ni-te-ly not be a sync-job
		2307	# the problem is that $exit might not survive long enough
		2308	# so it needs to be done right now, right here
		2309	cf::sync_job { prepare_random_map $exit };
		2310	}
		2311
		2312	my $slaying = cf::map::normalise $exit->slaying, $exit->map && $exit->map->path;
		2313	my $hp = $exit->stats->hp;
		2314	my $sp = $exit->stats->sp;
		2315
		2316	$self->enter_link;
		2317
		2318	(async {
		2319	$self->deactivate_recursive; # just to be sure
		2320	unless (eval {
		2321	$self->goto ($slaying, $hp, $sp);
		2322
		2323	1;
		2324	}) {
		2325	$self->message ("Something went wrong deep within the crossfire server. "
		2326	. "I'll try to bring you back to the map you were before. "
		2327	. "Please report this to the dungeon master!",
		2328	cf::NDI_UNIQUE | cf::NDI_RED);
		2329
		2330	warn "ERROR in enter_exit: $@";
		2331	$self->leave_link;
		2332	}
		2333	})->prio (1);
		2334	}
		2335
		2336	=head3 cf::client
		2337
		2338	=over 4
		2339
		2340	=item $client->send_drawinfo ($text, $flags)
		2341
		2342	Sends a drawinfo packet to the client. Circumvents output buffering so
		2343	should not be used under normal circumstances.
		2344
		2345	=cut
		2346
		2347	sub cf::client::send_drawinfo {
		2348	my ($self, $text, $flags) = @_;
		2349
		2350	utf8::encode $text;
		2351	$self->send_packet (sprintf "drawinfo %d %s", $flags || cf::NDI_BLACK, $text);
		2352	}
		2353
		2354	=item $client->send_msg ($color, $type, $msg, [extra...])
		2355
		2356	Send a drawinfo or msg packet to the client, formatting the msg for the
		2357	client if neccessary. C<$type> should be a string identifying the type of
		2358	the message, with C<log> being the default. If C<$color> is negative, suppress
		2359	the message unless the client supports the msg packet.
		2360
		2361	=cut
		2362
		2363	sub cf::client::send_msg {
		2364	my ($self, $color, $type, $msg, @extra) = @_;
		2365
		2366	$msg = $self->pl->expand_cfpod ($msg);
		2367
		2368	if ($self->can_msg) {
		2369	$self->send_packet ("msg " . cf::to_json [$color, $type, $msg, @extra]);
		2370	} else {
		2371	# replace some tags by gcfclient-compatible ones
		2372	for ($msg) {
		2373	1 while
		2374	s/<b>([^<]*)<\/b>/[b]${1}[\/b]/
		2375	|| s/<i>([^<]*)<\/i>/[i]${1}[\/i]/
		2376	|| s/<u>([^<]*)<\/u>/[ul]${1}[\/ul]/
		2377	|| s/<tt>([^<]*)<\/tt>/[fixed]${1}[\/fixed]/
		2378	|| s/<fg name=\"([^"]+)\">([^<]*)<\/fg>/[color=$1]${1}[\/color]/;
		2379	}
		2380
		2381	if ($color >= 0) {
		2382	if ($msg =~ /\[/) {
		2383	$self->send_packet ("drawextinfo $color 4 0 $msg")
		2384	} else {
		2385	$self->send_packet ("drawinfo $color $msg")
		2386	}
		2387	}
		2388	}
		2389	}
		2390
		2391	=item $client->ext_event ($type, %msg)
		2392
		2393	Sends an exti event to the client.
		2394
		2395	=cut
		2396
		2397	sub cf::client::ext_event($$%) {
752	my ($self, $id, %msg) = @_;	2398	my ($self, $type, %msg) = @_;
753		2399
754	$msg{msgid} = $id;	2400	$msg{msgtype} = "event_$type";
755
756	$self->send ("ext " . to_json \%msg);	2401	$self->send_packet ("ext " . cf::to_json \%msg);
757	}	2402	}
758		2403
759	#############################################################################	2404	=item $success = $client->query ($flags, "text", \&cb)
760	# map scripting support	2405
		2406	Queues a query to the client, calling the given callback with
		2407	the reply text on a reply. flags can be C<cf::CS_QUERY_YESNO>,
		2408	C<cf::CS_QUERY_SINGLECHAR> or C<cf::CS_QUERY_HIDEINPUT> or C<0>.
		2409
		2410	Queries can fail, so check the return code. Or don't, as queries will become
		2411	reliable at some point in the future.
		2412
		2413	=cut
		2414
		2415	sub cf::client::query {
		2416	my ($self, $flags, $text, $cb) = @_;
		2417
		2418	return unless $self->state == ST_PLAYING
		2419	|| $self->state == ST_SETUP
		2420	|| $self->state == ST_CUSTOM;
		2421
		2422	$self->state (ST_CUSTOM);
		2423
		2424	utf8::encode $text;
		2425	push @{ $self->{query_queue} }, [(sprintf "query %d %s", $flags, $text), $cb];
		2426
		2427	$self->send_packet ($self->{query_queue}[0][0])
		2428	if @{ $self->{query_queue} } == 1;
		2429	}
		2430
		2431	cf::client->attach (
		2432	on_reply => sub {
		2433	my ($ns, $msg) = @_;
		2434
		2435	# this weird shuffling is so that direct followup queries
		2436	# get handled first
		2437	my $queue = delete $ns->{query_queue}
		2438	or return; # be conservative, not sure how that can happen, but we saw a crash here
		2439
		2440	(shift @$queue)->[1]->($msg);
		2441	return unless $ns->valid; # temporary(?) workaround for callback destroying socket
		2442
		2443	push @{ $ns->{query_queue} }, @$queue;
		2444
		2445	if (@{ $ns->{query_queue} } == @$queue) {
		2446	if (@$queue) {
		2447	$ns->send_packet ($ns->{query_queue}[0][0]);
		2448	} else {
		2449	$ns->state (ST_PLAYING) if $ns->state == ST_CUSTOM;
		2450	}
		2451	}
		2452	},
		2453	);
		2454
		2455	=item $client->async (\&cb)
		2456
		2457	Create a new coroutine, running the specified callback. The coroutine will
		2458	be automatically cancelled when the client gets destroyed (e.g. on logout,
		2459	or loss of connection).
		2460
		2461	=cut
		2462
		2463	sub cf::client::async {
		2464	my ($self, $cb) = @_;
		2465
		2466	my $coro = &Coro::async ($cb);
		2467
		2468	$coro->on_destroy (sub {
		2469	delete $self->{_coro}{$coro+0};
		2470	});
		2471
		2472	$self->{_coro}{$coro+0} = $coro;
		2473
		2474	$coro
		2475	}
		2476
		2477	cf::client->attach (
		2478	on_destroy => sub {
		2479	my ($ns) = @_;
		2480
		2481	$_->cancel for values %{ (delete $ns->{_coro}) || {} };
		2482	},
		2483	);
		2484
		2485	=back
		2486
		2487
		2488	=head2 SAFE SCRIPTING
		2489
		2490	Functions that provide a safe environment to compile and execute
		2491	snippets of perl code without them endangering the safety of the server
		2492	itself. Looping constructs, I/O operators and other built-in functionality
		2493	is not available in the safe scripting environment, and the number of
		2494	functions and methods that can be called is greatly reduced.
		2495
		2496	=cut
761		2497
762	our $safe = new Safe "safe";	2498	our $safe = new Safe "safe";
763	our $safe_hole = new Safe::Hole;	2499	our $safe_hole = new Safe::Hole;
764		2500
765	$SIG{FPE} = 'IGNORE';	2501	$SIG{FPE} = 'IGNORE';
766		2502
767	$safe->permit_only (Opcode::opset qw(:base_core :base_mem :base_orig :base_math sort time));	2503	$safe->permit_only (Opcode::opset qw(:base_core :base_mem :base_orig :base_math sort time));
768		2504
769	# here we export the classes and methods available to script code	2505	# here we export the classes and methods available to script code
770		2506
		2507	=pod
		2508
		2509	The following functions and methods are available within a safe environment:
		2510
		2511	cf::object contr pay_amount pay_player map
		2512	cf::object::player player
		2513	cf::player peaceful
		2514	cf::map trigger
		2515
		2516	=cut
		2517
771	for (	2518	for (
772	["cf::object" => qw(contr pay_amount pay_player)],	2519	["cf::object" => qw(contr pay_amount pay_player map)],
773	["cf::object::player" => qw(player)],	2520	["cf::object::player" => qw(player)],
774	["cf::player" => qw(peaceful)],	2521	["cf::player" => qw(peaceful)],
		2522	["cf::map" => qw(trigger)],
775	) {	2523	) {
776	no strict 'refs';	2524	no strict 'refs';
777	my ($pkg, @funs) = @$_;	2525	my ($pkg, @funs) = @$_;
778	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})	2526	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})
779	for @funs;	2527	for @funs;
780	}	2528	}
		2529
		2530	=over 4
		2531
		2532	=item @retval = safe_eval $code, [var => value, ...]
		2533
		2534	Compiled and executes the given perl code snippet. additional var/value
		2535	pairs result in temporary local (my) scalar variables of the given name
		2536	that are available in the code snippet. Example:
		2537
		2538	my $five = safe_eval '$first + $second', first => 1, second => 4;
		2539
		2540	=cut
781		2541
782	sub safe_eval($;@) {	2542	sub safe_eval($;@) {
783	my ($code, %vars) = @_;	2543	my ($code, %vars) = @_;
784		2544
785	my $qcode = $code;	2545	my $qcode = $code;
…		…
830		2590
831	no strict 'refs';	2591	no strict 'refs';
832	*{"safe::$fun"} = $safe_hole->wrap ($cb);	2592	*{"safe::$fun"} = $safe_hole->wrap ($cb);
833	}	2593	}
834		2594
		2595	=back
		2596
		2597	=cut
		2598
835	#############################################################################	2599	#############################################################################
		2600	# the server's init and main functions
836		2601
837	=head2 EXTENSION DATABASE SUPPORT	2602	sub load_facedata($) {
		2603	my ($path) = @_;
838		2604
839	Crossfire maintains a very simple database for extension use. It can	2605	warn "loading facedata from $path\n";
840	currently store anything that can be serialised using Storable, which
841	excludes objects.
842		2606
843	The parameter C<$family> should best start with the name of the extension	2607	my $facedata;
844	using it, it should be unique.	2608	0 < aio_load $path, $facedata
		2609	or die "$path: $!";
845		2610
846	=over 4	2611	$facedata = Coro::Storable::thaw $facedata;
847		2612
848	=item $hashref = cf::db_get $family	2613	$facedata->{version} == 2
		2614	or cf::cleanup "$path: version mismatch, cannot proceed.";
849		2615
850	Return a hashref for use by the extension C<$family>, which can be
851	modified. After modifications, you have to call C<cf::db_dirty> or
852	C<cf::db_sync>.
853
854	=item $value = cf::db_get $family => $key
855
856	Returns a single value from the database
857
858	=item cf::db_put $family => $hashref
859
860	Stores the given family hashref into the database. Updates are delayed, if
861	you want the data to be synced to disk immediately, use C<cf::db_sync>.
862
863	=item cf::db_put $family => $key => $value
864
865	Stores the given C<$value> in the family hash. Updates are delayed, if you
866	want the data to be synced to disk immediately, use C<cf::db_sync>.
867
868	=item cf::db_dirty
869
870	Marks the database as dirty, to be updated at a later time.
871
872	=item cf::db_sync
873
874	Immediately write the database to disk I<if it is dirty>.
875
876	=cut
877
878	{
879	my $db;
880	my $path = cf::localdir . "/database.pst";
881
882	sub db_load() {
883	warn "loading database $path\n";#d# remove later
884	$db = stat $path ? Storable::retrieve $path : { };
885	}	2616	{
		2617	my $faces = $facedata->{faceinfo};
886		2618
887	my $pid;	2619	while (my ($face, $info) = each %$faces) {
888		2620	my $idx = (cf::face::find $face) || cf::face::alloc $face;
889	sub db_save() {	2621	cf::face::set $idx, $info->{visibility}, $info->{magicmap};
890	warn "saving database $path\n";#d# remove later	2622	cf::face::set_data $idx, 0, $info->{data32}, $info->{chksum32};
891	waitpid $pid, 0 if $pid;	2623	cf::face::set_data $idx, 1, $info->{data64}, $info->{chksum64};
892	if (0 == ($pid = fork)) {	2624	Coro::cede;
893	$db->{_meta}{version} = 1;
894	Storable::nstore $db, "$path~";
895	rename "$path~", $path;
896	cf::_exit 0 if defined $pid;
897	}
898	}
899
900	my $dirty;
901
902	sub db_sync() {
903	db_save if $dirty;
904	undef $dirty;
905	}
906
907	my $idle = Event->idle (min => $TICK * 2.8, max => 10, repeat => 0, cb => sub {
908	db_sync;
909	});
910
911	sub db_dirty() {
912	$dirty = 1;
913	$idle->start;
914	}
915
916	sub db_get($;$) {
917	@_ >= 2
918	? $db->{$_[0]}{$_[1]}
919	: ($db->{$_[0]} ||= { })
920	}
921
922	sub db_put($$;$) {
923	if (@_ >= 3) {
924	$db->{$_[0]}{$_[1]} = $_[2];
925	} else {
926	$db->{$_[0]} = $_[1];
927	}
928	db_dirty;
929	}
930
931	attach_global
932	prio => 10000,
933	on_cleanup => sub {
934	db_sync;
935	},	2625	}
		2626
		2627	while (my ($face, $info) = each %$faces) {
		2628	next unless $info->{smooth};
		2629	my $idx = cf::face::find $face
		2630	or next;
		2631	if (my $smooth = cf::face::find $info->{smooth}) {
		2632	cf::face::set_smooth $idx, $smooth, $info->{smoothlevel};
		2633	} else {
		2634	warn "smooth face '$info->{smooth}' not found for face '$face'";
		2635	}
		2636	Coro::cede;
		2637	}
		2638	}
		2639
		2640	{
		2641	my $anims = $facedata->{animinfo};
		2642
		2643	while (my ($anim, $info) = each %$anims) {
		2644	cf::anim::set $anim, $info->{frames}, $info->{facings};
		2645	Coro::cede;
		2646	}
		2647
		2648	cf::anim::invalidate_all; # d'oh
		2649	}
		2650
		2651	1
		2652	}
		2653
		2654	sub reload_regions {
		2655	load_resource_file "$MAPDIR/regions"
		2656	or die "unable to load regions file\n";
		2657	}
		2658
		2659	sub reload_facedata {
		2660	load_facedata "$DATADIR/facedata"
		2661	or die "unable to load facedata\n";
		2662	}
		2663
		2664	sub reload_archetypes {
		2665	load_resource_file "$DATADIR/archetypes"
		2666	or die "unable to load archetypes\n";
		2667	}
		2668
		2669	sub reload_treasures {
		2670	load_resource_file "$DATADIR/treasures"
		2671	or die "unable to load treasurelists\n";
		2672	}
		2673
		2674	sub reload_resources {
		2675	warn "reloading resource files...\n";
		2676
		2677	reload_regions;
		2678	reload_facedata;
		2679	#reload_archetypes;#d#
		2680	reload_archetypes;
		2681	reload_treasures;
		2682
		2683	warn "finished reloading resource files\n";
		2684	}
		2685
		2686	sub init {
		2687	reload_resources;
		2688	}
		2689
		2690	sub cfg_load {
		2691	open my $fh, "<:utf8", "$CONFDIR/config"
		2692	or return;
		2693
		2694	local $/;
		2695	*CFG = YAML::Syck::Load <$fh>;
		2696
		2697	$EMERGENCY_POSITION = $CFG{emergency_position} || ["/world/world_105_115", 5, 37];
		2698
		2699	$cf::map::MAX_RESET = $CFG{map_max_reset} if exists $CFG{map_max_reset};
		2700	$cf::map::DEFAULT_RESET = $CFG{map_default_reset} if exists $CFG{map_default_reset};
		2701
		2702	if (exists $CFG{mlockall}) {
		2703	eval {
		2704	$CFG{mlockall} ? eval "mlockall()" : eval "munlockall()"
		2705	and die "WARNING: m(un)lockall failed: $!\n";
		2706	};
		2707	warn $@ if $@;
		2708	}
		2709	}
		2710
		2711	sub main {
		2712	# we must not ever block the main coroutine
		2713	local $Coro::idle = sub {
		2714	Carp::cluck "FATAL: Coro::idle was called, major BUG, use cf::sync_job!\n";#d#
		2715	(async {
		2716	Event::one_event;
		2717	})->prio (Coro::PRIO_MAX);
936	;	2718	};
		2719
		2720	cfg_load;
		2721	db_init;
		2722	load_extensions;
		2723
		2724	$TICK_WATCHER->start;
		2725	Event::loop;
937	}	2726	}
938		2727
939	#############################################################################	2728	#############################################################################
940	# the server's main()	2729	# initialisation and cleanup
941		2730
942	sub main {	2731	# install some emergency cleanup handlers
943	db_load;	2732	BEGIN {
944	load_extensions;	2733	for my $signal (qw(INT HUP TERM)) {
945	Event::loop;	2734	Event->signal (
		2735	reentrant => 0,
		2736	data => WF_AUTOCANCEL,
		2737	signal => $signal,
		2738	prio => 0,
		2739	cb => sub {
		2740	cf::cleanup "SIG$signal";
		2741	},
		2742	);
		2743	}
946	}	2744	}
947		2745
948	#############################################################################	2746	sub write_runtime {
949	# initialisation	2747	my $runtime = "$LOCALDIR/runtime";
950		2748
951	sub _perl_reload(&) {	2749	# first touch the runtime file to show we are still running:
		2750	# the fsync below can take a very very long time.
		2751
		2752	IO::AIO::aio_utime $runtime, undef, undef;
		2753
		2754	my $guard = cf::lock_acquire "write_runtime";
		2755
		2756	my $fh = aio_open "$runtime~", O_WRONLY | O_CREAT, 0644
		2757	or return;
		2758
		2759	my $value = $cf::RUNTIME + 90 + 10;
		2760	# 10 is the runtime save interval, for a monotonic clock
		2761	# 60 allows for the watchdog to kill the server.
		2762
		2763	(aio_write $fh, 0, (length $value), $value, 0) <= 0
		2764	and return;
		2765
		2766	# always fsync - this file is important
		2767	aio_fsync $fh
		2768	and return;
		2769
		2770	# touch it again to show we are up-to-date
		2771	aio_utime $fh, undef, undef;
		2772
		2773	close $fh
		2774	or return;
		2775
		2776	aio_rename "$runtime~", $runtime
		2777	and return;
		2778
		2779	warn "runtime file written.\n";
		2780
		2781	1
		2782	}
		2783
		2784	sub emergency_save() {
		2785	my $freeze_guard = cf::freeze_mainloop;
		2786
		2787	warn "enter emergency perl save\n";
		2788
		2789	cf::sync_job {
		2790	# use a peculiar iteration method to avoid tripping on perl
		2791	# refcount bugs in for. also avoids problems with players
		2792	# and maps saved/destroyed asynchronously.
		2793	warn "begin emergency player save\n";
		2794	for my $login (keys %cf::PLAYER) {
		2795	my $pl = $cf::PLAYER{$login} or next;
		2796	$pl->valid or next;
		2797	$pl->save;
		2798	}
		2799	warn "end emergency player save\n";
		2800
		2801	warn "begin emergency map save\n";
		2802	for my $path (keys %cf::MAP) {
		2803	my $map = $cf::MAP{$path} or next;
		2804	$map->valid or next;
		2805	$map->save;
		2806	}
		2807	warn "end emergency map save\n";
		2808
		2809	warn "begin emergency database checkpoint\n";
		2810	BDB::db_env_txn_checkpoint $DB_ENV;
		2811	warn "end emergency database checkpoint\n";
		2812	};
		2813
		2814	warn "leave emergency perl save\n";
		2815	}
		2816
		2817	sub post_cleanup {
952	my ($msg) = @_;	2818	my ($make_core) = @_;
953		2819
954	$msg->("reloading...");	2820	warn Carp::longmess "post_cleanup backtrace"
		2821	if $make_core;
		2822	}
955		2823
956	eval {	2824	sub do_reload_perl() {
957	# cancel all watchers	2825	# can/must only be called in main
		2826	if ($Coro::current != $Coro::main) {
		2827	warn "can only reload from main coroutine";
		2828	return;
		2829	}
		2830
		2831	warn "reloading...";
		2832
		2833	warn "entering sync_job";
		2834
		2835	cf::sync_job {
		2836	cf::write_runtime; # external watchdog should not bark
		2837	cf::emergency_save;
		2838	cf::write_runtime; # external watchdog should not bark
		2839
		2840	warn "syncing database to disk";
		2841	BDB::db_env_txn_checkpoint $DB_ENV;
		2842
		2843	# if anything goes wrong in here, we should simply crash as we already saved
		2844
		2845	warn "cancelling all WF_AUTOCANCEL watchers";
958	$_->cancel for Event::all_watchers;	2846	for (Event::all_watchers) {
		2847	$_->cancel if $_->data & WF_AUTOCANCEL;
		2848	}
959		2849
960	# unload all extensions	2850	warn "flushing outstanding aio requests";
961	for (@exts) {	2851	for (;;) {
962	$msg->("unloading <$_>");	2852	BDB::flush;
963	unload_extension $_;	2853	IO::AIO::flush;
		2854	Coro::cede;
		2855	last unless IO::AIO::nreqs || BDB::nreqs;
		2856	warn "iterate...";
		2857	}
		2858
		2859	++$RELOAD;
		2860
		2861	warn "cancelling all extension coros";
		2862	$_->cancel for values %EXT_CORO;
		2863	%EXT_CORO = ();
		2864
		2865	warn "removing commands";
		2866	%COMMAND = ();
		2867
		2868	warn "removing ext commands";
		2869	%EXTCMD = ();
		2870
		2871	warn "unloading/nuking all extensions";
		2872	for my $pkg (@EXTS) {
		2873	warn "... unloading $pkg";
		2874
		2875	if (my $cb = $pkg->can ("unload")) {
		2876	eval {
		2877	$cb->($pkg);
		2878	1
		2879	} or warn "$pkg unloaded, but with errors: $@";
964	}	2880	}
965		2881
		2882	warn "... nuking $pkg";
		2883	Symbol::delete_package $pkg;
		2884	}
		2885
966	# unload all modules loaded from $LIBDIR	2886	warn "unloading all perl modules loaded from $LIBDIR";
967	while (my ($k, $v) = each %INC) {	2887	while (my ($k, $v) = each %INC) {
968	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;	2888	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
969		2889
970	$msg->("removing <$k>");	2890	warn "... unloading $k";
971	delete $INC{$k};	2891	delete $INC{$k};
972		2892
973	$k =~ s/\.pm$//;	2893	$k =~ s/\.pm$//;
974	$k =~ s/\//::/g;	2894	$k =~ s/\//::/g;
975		2895
…		…
978	}	2898	}
979		2899
980	Symbol::delete_package $k;	2900	Symbol::delete_package $k;
981	}	2901	}
982		2902
983	# sync database to disk
984	cf::db_sync;
985
986	# get rid of safe::, as good as possible	2903	warn "getting rid of safe::, as good as possible";
987	Symbol::delete_package "safe::$_"	2904	Symbol::delete_package "safe::$_"
988	for qw(cf::object cf::object::player cf::player cf::map cf::party cf::region);	2905	for qw(cf::attachable cf::object cf::object::player cf::client cf::player cf::map cf::party cf::region);
989		2906
990	# remove register_script_function callbacks
991	# TODO
992
993	# unload cf.pm "a bit"	2907	warn "unloading cf.pm \"a bit\"";
994	delete $INC{"cf.pm"};	2908	delete $INC{"cf.pm"};
		2909	delete $INC{"cf/pod.pm"};
995		2910
996	# don't, removes xs symbols, too,	2911	# don't, removes xs symbols, too,
997	# and global variables created in xs	2912	# and global variables created in xs
998	#Symbol::delete_package __PACKAGE__;	2913	#Symbol::delete_package __PACKAGE__;
999		2914
1000	# reload cf.pm	2915	warn "unload completed, starting to reload now";
		2916
1001	$msg->("reloading cf.pm");	2917	warn "reloading cf.pm";
1002	require cf;	2918	require cf;
		2919	cf::_connect_to_perl; # nominally unnecessary, but cannot hurt
1003		2920
1004	# load database again	2921	warn "loading config and database again";
1005	cf::db_load;	2922	cf::cfg_load;
1006		2923
1007	# load extensions	2924	warn "loading extensions";
1008	$msg->("load extensions");
1009	cf::load_extensions;	2925	cf::load_extensions;
1010		2926
1011	# reattach attachments to objects	2927	warn "reattaching attachments to objects/players";
1012	$msg->("reattach");	2928	_global_reattach; # objects, sockets
1013	_global_reattach;	2929	warn "reattaching attachments to maps";
		2930	reattach $_ for values %MAP;
		2931	warn "reattaching attachments to players";
		2932	reattach $_ for values %PLAYER;
		2933
		2934	warn "leaving sync_job";
		2935
		2936	1
		2937	} or do {
		2938	warn $@;
		2939	warn "error while reloading, exiting.";
		2940	exit 1;
1014	};	2941	};
1015	$msg->($@) if $@;
1016		2942
1017	$msg->("reloaded");	2943	warn "reloaded";
1018	};	2944	};
1019		2945
1020	sub perl_reload() {	2946	our $RELOAD_WATCHER; # used only during reload
1021	_perl_reload {	2947
1022	warn $_[0];	2948	sub reload_perl() {
1023	print "$_[0]\n";	2949	# doing reload synchronously and two reloads happen back-to-back,
		2950	# coro crashes during coro_state_free->destroy here.
		2951
		2952	$RELOAD_WATCHER ||= Event->timer (
		2953	reentrant => 0,
		2954	after => 0,
		2955	data => WF_AUTOCANCEL,
		2956	cb => sub {
		2957	do_reload_perl;
		2958	undef $RELOAD_WATCHER;
		2959	},
1024	};	2960	);
1025	}	2961	}
1026		2962
1027	register_command "perl-reload", 0, sub {	2963	register_command "reload" => sub {
1028	my ($who, $arg) = @_;	2964	my ($who, $arg) = @_;
1029		2965
1030	if ($who->flag (FLAG_WIZ)) {	2966	if ($who->flag (FLAG_WIZ)) {
1031	_perl_reload {	2967	$who->message ("reloading server.");
1032	warn $_[0];	2968	async { reload_perl };
1033	$who->message ($_[0]);	2969	}
		2970	};
		2971
		2972	unshift @INC, $LIBDIR;
		2973
		2974	my $bug_warning = 0;
		2975
		2976	our @WAIT_FOR_TICK;
		2977	our @WAIT_FOR_TICK_BEGIN;
		2978
		2979	sub wait_for_tick {
		2980	return unless $TICK_WATCHER->is_active;
		2981	return if $Coro::current == $Coro::main;
		2982
		2983	my $signal = new Coro::Signal;
		2984	push @WAIT_FOR_TICK, $signal;
		2985	$signal->wait;
		2986	}
		2987
		2988	sub wait_for_tick_begin {
		2989	return unless $TICK_WATCHER->is_active;
		2990	return if $Coro::current == $Coro::main;
		2991
		2992	my $signal = new Coro::Signal;
		2993	push @WAIT_FOR_TICK_BEGIN, $signal;
		2994	$signal->wait;
		2995	}
		2996
		2997	my $min = 1e6;#d#
		2998	my $avg = 10;
		2999	$TICK_WATCHER = Event->timer (
		3000	reentrant => 0,
		3001	parked => 1,
		3002	prio => 0,
		3003	at => $NEXT_TICK || $TICK,
		3004	data => WF_AUTOCANCEL,
		3005	cb => sub {
		3006	if ($Coro::current != $Coro::main) {
		3007	Carp::cluck "major BUG: server tick called outside of main coro, skipping it"
		3008	unless ++$bug_warning > 10;
		3009	return;
		3010	}
		3011
		3012	$NOW = $tick_start = Event::time;
		3013
		3014	cf::server_tick; # one server iteration
		3015
		3016	0 && sync_job {#d#
		3017	for(1..10) {
		3018	my $t = Event::time;
		3019	my $map = my $map = new_from_path cf::map "/tmp/x.map"
		3020	or die;
		3021
		3022	$map->width (50);
		3023	$map->height (50);
		3024	$map->alloc;
		3025	$map->_load_objects ("/tmp/x.map", 1);
		3026	my $t = Event::time - $t;
		3027
		3028	#next unless $t < 0.0013;#d#
		3029	if ($t < $min) {
		3030	$min = $t;
		3031	}
		3032	$avg = $avg * 0.99 + $t * 0.01;
		3033	}
		3034	warn "XXXXXXXXXXXXXXXXXX min $min avg $avg\n";#d#
		3035	exit 0;
		3036	# 2007-05-22 02:33:04.569 min 0.00112509727478027 avg 0.0012259249572477
1034	};	3037	};
1035	}
1036	};
1037		3038
1038	register "<global>", __PACKAGE__;	3039	$RUNTIME += $TICK;
1039
1040	unshift @INC, $LIBDIR;
1041
1042	$TICK_WATCHER = Event->timer (
1043	prio => 1,
1044	at => $NEXT_TICK || 1,
1045	cb => sub {
1046	cf::server_tick; # one server iteration
1047
1048	my $NOW = Event::time;
1049	$NEXT_TICK += $TICK;	3040	$NEXT_TICK += $TICK;
1050		3041
		3042	if ($NOW >= $NEXT_RUNTIME_WRITE) {
		3043	$NEXT_RUNTIME_WRITE = $NOW + 10;
		3044	Coro::async_pool {
		3045	write_runtime
		3046	or warn "ERROR: unable to write runtime file: $!";
		3047	};
		3048	}
		3049
		3050	# my $AFTER = Event::time;
		3051	# warn $AFTER - $NOW;#d#
		3052
		3053	if (my $sig = shift @WAIT_FOR_TICK_BEGIN) {
		3054	$sig->send;
		3055	}
		3056	while (my $sig = shift @WAIT_FOR_TICK) {
		3057	$sig->send;
		3058	}
		3059
		3060	$NOW = Event::time;
		3061
1051	# if we are delayed by four ticks, skip them all	3062	# if we are delayed by four ticks or more, skip them all
1052	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;	3063	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;
1053		3064
1054	$TICK_WATCHER->at ($NEXT_TICK);	3065	$TICK_WATCHER->at ($NEXT_TICK);
1055	$TICK_WATCHER->start;	3066	$TICK_WATCHER->start;
		3067
		3068	$LOAD = ($NOW - $tick_start) / $TICK;
		3069	$LOADAVG = $LOADAVG * 0.75 + $LOAD * 0.25;
		3070
		3071	_post_tick;
		3072
		3073
1056	},	3074	},
1057	);	3075	);
1058		3076
		3077	{
		3078	BDB::max_poll_time $TICK * 0.1;
		3079	$BDB_POLL_WATCHER = Event->io (
		3080	reentrant => 0,
		3081	fd => BDB::poll_fileno,
		3082	poll => 'r',
		3083	prio => 0,
		3084	data => WF_AUTOCANCEL,
		3085	cb => \&BDB::poll_cb,
		3086	);
		3087	BDB::min_parallel 8;
		3088
		3089	BDB::set_sync_prepare {
		3090	my $status;
		3091	my $current = $Coro::current;
		3092	(
		3093	sub {
		3094	$status = $!;
		3095	$current->ready; undef $current;
		3096	},
		3097	sub {
		3098	Coro::schedule while defined $current;
		3099	$! = $status;
		3100	},
		3101	)
		3102	};
		3103
		3104	unless ($DB_ENV) {
		3105	$DB_ENV = BDB::db_env_create;
		3106
		3107	cf::sync_job {
		3108	eval {
		3109	BDB::db_env_open
		3110	$DB_ENV,
		3111	$BDBDIR,
		3112	BDB::INIT_LOCK | BDB::INIT_LOG | BDB::INIT_MPOOL | BDB::INIT_TXN
		3113	| BDB::RECOVER | BDB::REGISTER | BDB::USE_ENVIRON | BDB::CREATE,
		3114	0666;
		3115
		3116	cf::cleanup "db_env_open($BDBDIR): $!" if $!;
		3117
		3118	$DB_ENV->set_flags (BDB::AUTO_COMMIT | BDB::REGION_INIT | BDB::TXN_NOSYNC, 1);
		3119	$DB_ENV->set_lk_detect;
		3120	};
		3121
		3122	cf::cleanup "db_env_open(db): $@" if $@;
		3123	};
		3124	}
		3125	}
		3126
		3127	{
		3128	IO::AIO::min_parallel 8;
		3129
		3130	undef $Coro::AIO::WATCHER;
		3131	IO::AIO::max_poll_time $TICK * 0.1;
		3132	$AIO_POLL_WATCHER = Event->io (
		3133	reentrant => 0,
		3134	data => WF_AUTOCANCEL,
		3135	fd => IO::AIO::poll_fileno,
		3136	poll => 'r',
		3137	prio => 6,
		3138	cb => \&IO::AIO::poll_cb,
		3139	);
		3140	}
		3141
		3142	my $_log_backtrace;
		3143
		3144	sub _log_backtrace {
		3145	my ($msg, @addr) = @_;
		3146
		3147	$msg =~ s/\n//;
		3148
		3149	# limit the # of concurrent backtraces
		3150	if ($_log_backtrace < 2) {
		3151	++$_log_backtrace;
		3152	async {
		3153	my @bt = fork_call {
		3154	@addr = map { sprintf "%x", $_ } @addr;
		3155	my $self = (-f "/proc/$$/exe") ? "/proc/$$/exe" : $^X;
		3156	open my $fh, "exec addr2line -C -f -i -e \Q$self\E @addr 2>&1 |"
		3157	or die "addr2line: $!";
		3158
		3159	my @funcs;
		3160	my @res = <$fh>;
		3161	chomp for @res;
		3162	while (@res) {
		3163	my ($func, $line) = splice @res, 0, 2, ();
		3164	push @funcs, "[$func] $line";
		3165	}
		3166
		3167	@funcs
		3168	};
		3169
		3170	LOG llevInfo, "[ABT] $msg\n";
		3171	LOG llevInfo, "[ABT] $_\n" for @bt;
		3172	--$_log_backtrace;
		3173	};
		3174	} else {
		3175	LOG llevInfo, "[ABT] $msg\n";
		3176	LOG llevInfo, "[ABT] [suppressed]\n";
		3177	}
		3178	}
		3179
		3180	# load additional modules
		3181	use cf::pod;
		3182
		3183	END { cf::emergency_save }
		3184
1059	1	3185	1
1060		3186

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